Yes, Reader is based off of Toko Fukawa but her past is different

Name: Y/N L/N

Appearance: H/C hair, E/C eyes, wears wire-rimmed round glasses, wears a black kimono with a white bow on the waist, hidden by her kimono are tally marks carved onto her upper thighs, a count of how many men Genocide Jack/Jill has killed

Personality: Y/N is intellectually gifted, yet she has problems in social behavior. It's been stated that she either never learned or never bothered to learn social skills. She even considers herself a 'gloomy outcast', often deciding to distance herself from others.

Due to the constant bullying she faced as a child, Y/N is highly suspicious of other people, frequently accusing them of thinking bad things about her. She expresses her opinions freely and extremely, which can come across as mean and often rubs people the wrong way, though she claims she is just being honest. She has an unusually quick tendency to self-victimize and she refuses to believe compliments from other people. She also is very self-conscious about her body and tends to think that other people consider her ugly.

Past: When Y/N was 3 years old, a powerful female demon came into her house, killing her parents and taking her body as her vessel(?) Y/N figured out whenever she would sleep, faint, or sneeze, Genocide Jack/Jill would take control. When Y/N's back in control, she has no memory of what Genocide Jack/Jill did, but she still knows Genocide Jack/Jill resides in her, and tries to not let her take control.

Breath: Breath of Ink

First Form: Splattering Ink

The technique used for defense move. The user spin their sword in one or two hands and move it in certain directions in incredibly fast speed. The sword length will look like it expands by the ink that is contained inside, making the range of protection wider.

Second Form: Xylene Corruption

The user stabs the opponent from the back, injecting ink that contains xylene inside their bloodstream to make the opponent lose focus and cause severe irritation in their eyes, nose and throat to weaken them for an enough amount of time. This form is used to help the other swordsmen launch their attack by buying time.

Third Form: Guiltless Scribbles

The user swings the sword several times nearby the opponent's body, creating lines on the aimed parts by the ink. It may seem harmless at first, but slowly the lines will burn the opponent's skin(which had the ink) just like acid, and it will spread slowly until it has fully burnt/detach the parts(depending on where)

Fourth Form: Stained Waterfall

This form creates an illusion as if the opponent were standing in the water of a pure, beautiful waterfall. The water will slowly became stained with dark crimson colour, and a light shows up in front of them in the water. When the opponent have snapped back to the actual reality, the user leaps and sliced through the opponent's neck/weak spot. Though, it depends on how quick the opponent's realization, and/or if the aim was right.

Fifth Form: Ink Spout

The user spins and swung their sword in a circular motion, creating a ink sprout like attack as it will be easier for the user to free themself once being surrounded by demons since the attack will come from any direction. This form are similar to Second form of the Water Breathing.

Sixth Form: Overflowing Injection

The user uses ink that is inside the sword while sending an attack towards the opponent. The ink contains Toluene, that when the user creates a cut or dismembered a limb of the opponent, it will weaken the speed of regeneration.

Seventh Form: Subconscious Literature Fatality

The user swings their sword to create multiple cuts on the opponent. This form may came out as if it doesn't do any damage to the opponent, as it only make a few minor cuts and ink staining on their body. But the Ethylene glycol that is contained inside the ink, and if it has inserted inside their blood, it may kill the opponent slowly after receiving a few symptoms.

Credit to Muntiller on Amino

Bird: Long Tailed Tit

Name: Genocide Jack/Jill

Appearance: Her appearance is similar to Y/N as they share the same body, however some features differ: her irises turn red, and gains an abnormally large tongue over a mouthful of sharp teeth

Personality: She laughs a lot and sometimes pretends to be serious only to reveal that she is just joking.

Unlike Y/N, Genocide Jack/Jill is very loud and outgoing.

She is quite lewd at times, not hesitant to harass other people over their figure or make inappropriate remarks to other people. Jack/Jill is a self-proclaimed fujoshi and says that she only kills cute boys who 'turn her on'. She also seems to like yuri, though she says that she's not into girls. She has also been portrayed with both sadistic and masochistic traits.

Blood Demon Art: (I need a name recommendation eismshelanns)

Allows the user to summon scissors and use them in battle. The user can make the scissors grow in size or shrink in size. Kind of like telekinesis, the user can make the scissors float and throw them in a straight line towards the enemy, user cannot make anything else float besides the scissors they summon. User cannot manipulate normal scissors that aren't theirs.

Love Interests:

Tanjiro Kamado

Zenitsu Agatsuma

Inosuke Hashibara

Giyuu Tomioka

Muichiro Tokito

Mitsuri Kanroji (Maybe)