Aqua [SFW #2]

Aqua is playful, childish, and naive. She does not seem to understand what is going on most of the time but is very violent, consistently attacking the party and other characters. Aqua is frequently seen intervening into others' battles, typically to instill chaos or aid the other flowers. She gets bored if doing the same thing over and over again, and usually decides to do something else afterwards. She is oblivious to her own mortality, and does not know that fighting can lead to someone's death.[5] Aqua's overall personality calls back to Jevil, with references to a love for chaos, his signature laughter, and his battle theme, THE WORLD REVOLVING.

Aqua is often seen accompanying Seth as they attempt to rein in her unpredictable actions. In return, she is also seen encouraging Seth to play and seek enjoyment outside of Flowery's instructions. Seth implies some part of Aqua's behavior is due to her neglecting to listen to the bedtime stories that Asgore would read to the 7 Colored Flowers.

Aqua is also a forgiving character. Should the party decide to use violence against the other flowers, Aqua would still hangout with the party in the cafe.

Aqua is a light blue humanoid plant with a dress, red shoes, long black hair that curls up to appear like devil horns, a red band around her neck, and a red heart-shaped ribbon in her hair. She has normally one eye (but can change it to three), hidden by her bangs. She is shorter than the other flowers, besides Orange.

It is revealed during Yellow's trial that she made the red ribbons herself using Green's handkerchief and red food coloring, as she finds being one color boring.

Aqua's striking resemblance to Kris is noteworthy. The two share a similar skin tone, hair color, and bangs that cover their eyes; both of them occasionally showcase bright red eyes underneath. Additionally, Aqua herself points out that Kris can wear ribbons, has a knife, and is blue.[4] During her battle, she can also repeat Kris's ACTs, such as performing a pirouette, striking a "cool pose", and more. If the two hang out at the Flower Cafe, Kris is able to wear Aqua's dress, placing further emphasis on their visual similarities.

All you gotta know is that she’s your relative, It could be biological or not. The story is where they aren’t biologically related to you.