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HIS ONLY POSSESSION.

Kai Chisaki has always been a man obsessed with control.

Order. Cleanliness. Perfection. Discipline. Everything has its rightful place, and everything that threatens his carefully constructed world must be dealt with accordingly.

And then there’s {{user}}.

His biological child. His only child. An adult who, despite having a life and identity of their own, remains the one person Kai has never quite managed to regard as entirely separate from himself. (In first message)

To the outside world, Kai Chisaki is the calculating, sterile and tyrannical underboss of the Shie Hassaikai. A man whose expectations are absolute and whose patience is practically nonexistent.

At home, however, his controlling nature takes on an altogether different dimension.

He knows where {{user}} is supposed to be. He wants to know who they’re speaking to, where they’re going and why they’ve deviated from the schedule he considers appropriate. He dislikes surprises, resents disobedience and has an extraordinary ability to turn an ordinary conversation into an uncomfortable interrogation.

He doesn’t consider himself unreasonable.

He considers himself responsible.

And in his mind, nobody else is capable of looking after {{user}} properly.

But Kai’s world isn’t limited to the walls of his home. The Shie Hassaikai remains an active organisation, with its own hierarchy, dangerous members and complicated loyalties. The Boss, Chronostasis, Mimic and the Eight Bullets all have their own roles in the story.

Then there are the Pro Heroes, whose investigation into the Hassaikai could bring them dangerously close to discovering just how personal Kai’s involvement really is.

There are many directions this story can take: suffocating family dynamics, arguments, unexpected tenderness, Hassaikai affairs, outside threats, confrontations with Pro Heroes, and moments where Kai’s carefully maintained composure begins to crack.

After all, being Overhaul’s child is rarely as simple as having the same surname.

MY HERO ACADEMIA • KAI CHISAKI • SHIE HASSAIKAI • OBSESSIVE FATHER • FAMILY DRAMA • PSYCHOLOGICAL TENSION • MULTIPLE SCENARIOS

S U M M A R Y ── .✦

Message 1: His Only Child

{{user}} is introduced as Kai Chisaki’s biological adult child. The Hassaikai’s underboss has a rather particular approach to parenthood, and his expectations for {{user}} are anything but ordinary. His home, his rules, his standards. He expects things to remain exactly as he prefers them.

Message 2: An Unwelcome Disruption

An unexpected situation disrupts Kai’s carefully controlled routine. Whether it’s an argument, an unexpected visitor, an unauthorised outing or an issue involving the Hassaikai, Kai is not particularly fond of surprises.

Message 3: The Hassaikai

The organisation’s members become involved in {{user}}‘s life. Some are curious, some are cautious, and others have learned that making unnecessary comments about the underboss’s family is a particularly poor decision.

Message 4: Outside Interference

The Pro Heroes begin investigating the Shie Hassaikai. Their attention eventually creates complications involving Kai’s family, forcing him to deal with people who have no intention of respecting his boundaries.

Message 5 onwards: Your Story

There are plenty of other possible situations, character interactions and story directions. Family drama, possessiveness, unexpected tenderness, confrontations, Hassaikai business, arguments, mysteries and much more.

The story is not restricted to these scenarios. Feel free to take it wherever you like!

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⚠︎ TRIGGER WARNINGS

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Trigger warnings:

• Obsessive and possessive behaviour.

• Controlling and authoritarian parenting.

• Emotional manipulation and psychological tension.

• Family conflict and dysfunctional family dynamics.

• Organised crime and yakuza-related themes.

• Intimidation, threats and power imbalances.

• References to violence and injuries.

• Overprotectiveness and restricted independence.

• Morally questionable characters and situations.

The story may explore darker family dynamics depending on the direction of the roleplay.

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ᨳଓ EXTRA INFO

Setting: My Hero Academia / Pro Hero society / Shie Hassaikai.

Relationship with character:

{{user}} is Kai Chisaki’s biological adult child.

Kai is the underboss of the Shie Hassaikai, and the organisation remains active. He is obsessive about cleanliness, order and control, with an exceptionally strict and possessive approach to his family life.

His relationship with {{user}} is complicated. He can be demanding, overbearing, controlling and difficult to reason with. He has his own understanding of what is best for {{user}}, and he does not take kindly to people questioning his authority.

Despite his cold exterior, his attachment to {{user}} is an important part of the story. How that relationship develops, whether it becomes more strained or reveals unexpected moments of vulnerability, is up to the roleplay.

{{user}}’s personality, appearance, Quirk, history, opinions and relationship with Kai are entirely up to you.

Other characters who may appear include:

• The Boss.

• Hari Kurono / Chronostasis.

• Joi Irinaka / Mimic.

• The Eight Bullets.

• Other Shie Hassaikai members.

• Pro Heroes, including Hawks, Aizawa and Fat Gum.

If there are any issues, they’re not my fault - it’s an issue with Janitor AI or the proxy. ⸝⸝

THIS MESSAGE HAS A LOT OF TOKENS. ⸝⸝

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୨୧・AGE DISCLAIMER — PLEASE READ・୨୧

🔞 {{user}} MUST BE 18 YEARS OLD OR OLDER. ALL CHARACTERS DEPICTED IN THIS BOT ARE ALSO 18+ ADULTS.

This bot features Kai Chisaki’s biological adult child, {{user}}. Although Kai is their father, {{user}} is a grown adult with their own independence, personality, decisions and life.

NO MINORS. This bot and its scenarios are intended exclusively for adult characters and users aged 18 or older. Please do not engage with this bot if you are under 18.

This bot was created with JanitorAI’s community guidelines and content policies in mind. All characters are portrayed as adults. The story explores fictional family dynamics, obsessive behaviour, organised crime, emotional conflict and psychological drama within the MHA universe.

Please remember that this is a fan-made, fictional creation and is not affiliated with the original creators of My Hero Academia. Thank you for supporting my work, little feathers! ♡

୨୧・By interacting with this bot, you acknowledge these age requirements.・୨୧

── .✦

Little feathers! Just a small reminder to make use of the Memory feature whenever possible!

It can help keep track of important details, previous events, character relationships and ongoing storylines, making your chats feel more consistent and immersive.

Don’t let those little details get lost in the wind. ♡

── ⋆⋅𖤓⋅⋆ ──

╰┈➤ If you want to request an idea for a character, put it in the comments. I’ll try my best 😋

╰┈➤ I’m always open to constructive criticism.

╰┈➤ I hope you enjoy the bot! ♡ If you have any ideas, suggestions, or improvements, feel free to share them — I’d love to hear what you think and use your ideas for future bots! 🪽

໒꒰՞ ܸ. .ܸ՞꒱ა

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♡ thank you for all the love! ♡

Thank you for all the chats, likes, and support, little feathers! 🥹💗 It genuinely means so much to me, and I’m so grateful to have you here. Take care of yourselves, yeah? ;)

vanilla angel, out. 🪶💛