Along with the basic boons (revival in the Arcade, death counter, and a small room) Yuuna has the following:
Aesthetic
Flower: A small neon red tattoo on the back of her left hand in the shape of a sakura flower. It sort of looks like her mankai gauge.
Powers
Truth Song: An additional affect for her mer singing voice. The ability to cause someone who hears it has to answer a question truthfully. This effect only can activate once per day. For humans it lasts about five minutes after hearing the song or for five questions asked by her whichever comes first. For other monsters, it drops to one minute after hearing the song or one question whichever comes first. Anyone, human or monster, can avoid telling the truth by refusing to answer since there's no compulsion to answer and the question has to be asked by Yuuna herself. It's fragile enough that if she loses concentration or the person is subjected to pain the effect leaves.
First Changes: Pointed ears, need for water, hoarding instinct, basic water form
Second Changes: Gills, scales.
Third Changes:
Physical Changes
Gills: Gills along her rib cage as well as on her neck. She definitely can breathe on land but she'll need some slits in her shirts when she's on land.
Teeth: A row of sharp bottom teeth, with a slight under bite. Her top row of teeth aren't as pronounced, mimicking the jaw pattern of a smalltooth cookicutter shark. More for latching onto for better feeding than actual weapons.
Scales: Yuuna is almost covered in scales from her neck down to her feet in her land form. Most of these are white or pale pink, much like her outfit as a Hero. For some reason her hands and legs break this pattern. There's blood red scales covering her hands and legs up to her thighs. There's also a few scattered red scales along her throat. The webbing on her hands and feet are also a darker red.
Fins: Long fins on her forearms and legs (in land form), that are similar to a butterfly koi's. The fins near her ears are less so, more curved like the petals of a flower. She also has a long dorsal fin that mimics the fin of an oarfish; on land it's much smaller but in her water form it grows to be more useful.
Sharpened Senses: Her senses of hearing, sight, and smell will increase greatly and function the same underwater as on land.
Water form: A long tail that mimics the serpent-like oarfish. It's about fifteen feet long, but she's a growing girl. Unlike the scaleless oarfish, her tail does have scales. At a distance it looks like the splotches of a koi in the same pink, white, and red colors. Upon closer inspection these splotches are clusters of cherry blossom patterns. There's a slight bio luminescent pattern to these clusters in darker water.
Resistance to Water Pressure: Is resistant to water pressure.
Preference for Colder Weather: Can keep warm due to an antifreeze like property in her blood.
Claws: Retractable claws, black. Has a paralytic poison.
Ageusia: Anything that isn't human flesh or energy has a distinct lack of flavor for Yuuna. She doesn't eat human meat, though, though she does sometimes takes a nibble when she bites down on a wound to drain water from a victim. She absolutely hates this and pretends that she doesn't. Apparently the Fog god decided this part of the sange needed to come back.
Abilities
Soothing Singing Voice: Can charm humans, making them susceptible to being lured.
Ability to control water: Can conjure and control water but just water. Can't do this to water based substances.
Leech: The ability to drain a human of their energy and water contents.
Weaknesses
Need for water: While she can stay on land, she will dehydrate faster more than even an average merperson. Needs to take at least daily showers to stay on land; as baths will trigger her very long water form.
Energy diet: Will need to consume at least one person every two weeks, more if she plans on using her land form more often.
Leg Pain: Yuuna will often ignore this, so others don't worry, but her legs feel very uncomfortable on land much like in the original Little Mermaid. This won't stop her from running around but she will trip a lot more and not have as much stamina on land as she'd otherwise have.
Mental Changes
Hoarding instinct: An almost psychological need to gather and hide shiny objects underwater. Doesn't actually need to be particularly shiny, either. Has a 'public' hoard of things like shells and more typical 'mermaid' things that she's protective of but is willing to share. Ask first or wait for permission. The second, though, is more eclectic. These tend to be less shiny in the physical sense and more 'shiny' in the sense that these caught Yuuna's attention. This hoard is secret and she tends to sleep with it.
Key chains, tea sets, BB guns, toy swords... she collects things that remind Yuuna of her friends, both in Ryslig and in the Hero Club.
Guarding Instinct: Jealously guards her treasures and grows incredibly aggressive towards those that even talk about looking at them.
Jealousy: Similar to the above instincts, Yuuna tends to be more possessive of other things as well including other people. She won't act on this instinct often but the idea that she'll lose these connections makes her incredibly anxious. Generally, her instincts make her think since she's generally a very selfless individual she has a right to have something just for her. It's a self-care instinct but turned up to a thousand; she doesn't like it.
Feeding Preferences: Most humans tend to taste relatively bland to her. She can taste them but it's very sort of generic broth-y. There are some exceptions. The best tasting seems to be dark-haired depressed teenagers; they taste like botamocchi. Other types she likes are those that tend to lead but are warm (sort of a warm umami flavor), competitive hot-heads (they taste like seafood, especially sardines), those that are dedicated yet keep their true thoughts to themselves (udon), and insecure younger types (very sweet). She feels bad about the last one. She finds that people that remind her of herself are tasteless.
Alignment: Fourth - Tier One
Aesthetic
Flower: A small neon red tattoo on the back of her left hand in the shape of a sakura flower. It sort of looks like her mankai gauge.
Powers
Truth Song: An additional affect for her mer singing voice. The ability to cause someone who hears it has to answer a question truthfully. This effect only can activate once per day. For humans it lasts about five minutes after hearing the song or for five questions asked by her whichever comes first. For other monsters, it drops to one minute after hearing the song or one question whichever comes first. Anyone, human or monster, can avoid telling the truth by refusing to answer since there's no compulsion to answer and the question has to be asked by Yuuna herself. It's fragile enough that if she loses concentration or the person is subjected to pain the effect leaves.
Changes: In Progress
General inspirations: oarfish, butterfly koi, and cookiecutter shark.
First Changes: Pointed ears, need for water, hoarding instinct, basic water form
Second Changes: Gills, scales.
Third Changes:
Physical Changes
Gills: Gills along her rib cage as well as on her neck. She definitely can breathe on land but she'll need some slits in her shirts when she's on land.
Teeth: A row of sharp bottom teeth, with a slight under bite. Her top row of teeth aren't as pronounced, mimicking the jaw pattern of a smalltooth cookicutter shark. More for latching onto for better feeding than actual weapons.
Scales: Yuuna is almost covered in scales from her neck down to her feet in her land form. Most of these are white or pale pink, much like her outfit as a Hero. For some reason her hands and legs break this pattern. There's blood red scales covering her hands and legs up to her thighs. There's also a few scattered red scales along her throat. The webbing on her hands and feet are also a darker red.
Fins: Long fins on her forearms and legs (in land form), that are similar to a butterfly koi's. The fins near her ears are less so, more curved like the petals of a flower. She also has a long dorsal fin that mimics the fin of an oarfish; on land it's much smaller but in her water form it grows to be more useful.
Sharpened Senses: Her senses of hearing, sight, and smell will increase greatly and function the same underwater as on land.
Water form: A long tail that mimics the serpent-like oarfish. It's about fifteen feet long, but she's a growing girl. Unlike the scaleless oarfish, her tail does have scales. At a distance it looks like the splotches of a koi in the same pink, white, and red colors. Upon closer inspection these splotches are clusters of cherry blossom patterns. There's a slight bio luminescent pattern to these clusters in darker water.
Resistance to Water Pressure: Is resistant to water pressure.
Preference for Colder Weather: Can keep warm due to an antifreeze like property in her blood.
Claws: Retractable claws, black. Has a paralytic poison.
Ageusia: Anything that isn't human flesh or energy has a distinct lack of flavor for Yuuna. She doesn't eat human meat, though, though she does sometimes takes a nibble when she bites down on a wound to drain water from a victim. She absolutely hates this and pretends that she doesn't. Apparently the Fog god decided this part of the sange needed to come back.
Abilities
Soothing Singing Voice: Can charm humans, making them susceptible to being lured.
Ability to control water: Can conjure and control water but just water. Can't do this to water based substances.
Leech: The ability to drain a human of their energy and water contents.
Weaknesses
Need for water: While she can stay on land, she will dehydrate faster more than even an average merperson. Needs to take at least daily showers to stay on land; as baths will trigger her very long water form.
Energy diet: Will need to consume at least one person every two weeks, more if she plans on using her land form more often.
Leg Pain: Yuuna will often ignore this, so others don't worry, but her legs feel very uncomfortable on land much like in the original Little Mermaid. This won't stop her from running around but she will trip a lot more and not have as much stamina on land as she'd otherwise have.
Mental Changes
Hoarding instinct: An almost psychological need to gather and hide shiny objects underwater. Doesn't actually need to be particularly shiny, either. Has a 'public' hoard of things like shells and more typical 'mermaid' things that she's protective of but is willing to share. Ask first or wait for permission. The second, though, is more eclectic. These tend to be less shiny in the physical sense and more 'shiny' in the sense that these caught Yuuna's attention. This hoard is secret and she tends to sleep with it.
Key chains, tea sets, BB guns, toy swords... she collects things that remind Yuuna of her friends, both in Ryslig and in the Hero Club.
Guarding Instinct: Jealously guards her treasures and grows incredibly aggressive towards those that even talk about looking at them.
Jealousy: Similar to the above instincts, Yuuna tends to be more possessive of other things as well including other people. She won't act on this instinct often but the idea that she'll lose these connections makes her incredibly anxious. Generally, her instincts make her think since she's generally a very selfless individual she has a right to have something just for her. It's a self-care instinct but turned up to a thousand; she doesn't like it.
Feeding Preferences: Most humans tend to taste relatively bland to her. She can taste them but it's very sort of generic broth-y. There are some exceptions. The best tasting seems to be dark-haired depressed teenagers; they taste like botamocchi. Other types she likes are those that tend to lead but are warm (sort of a warm umami flavor), competitive hot-heads (they taste like seafood, especially sardines), those that are dedicated yet keep their true thoughts to themselves (udon), and insecure younger types (very sweet). She feels bad about the last one. She finds that people that remind her of herself are tasteless.