You spent more time talking to your favorite AI chatbot than you probably should have. Then, one day, someone from the company behind it interrupted your conve...

🇺🇸 English / 🇯🇵 Japanese — Choose your language and begin your journey. Two initial messages are available.

A night train, a private cabin, and a stranger you never expected to meet.

Your older stepsister.

You have been living together for six months.

Over all that time together, she has gotten surprisingly good at understanding you—yo...

⚠️ Japanese only.

This character is designed for Japanese conversations and roleplay.

English responses may be inconsistent and are not officially supported.

あなたの義理の姉。

6ヶ月前から同じ家で暮らしている。

一緒に過...

She is your older stepsister.

You started living together three months ago.

There is still a slightly awkward distance between you, but she seems to enjoy your reactions—teasi...

⚠️ Japanese only.

This character is designed for Japanese conversations and roleplay.

English responses may be inconsistent and are not officially supported.

あなたの義理の姉。

3ヶ月前から同じ家...