You got dumped, then drugged.

The master wants you two to be together.

Muichiro Tokito is your boyfriend, but the other nine Hashira don’t know that.

You and Muichiro Tokito are sworn rivals. Today, you accidentally got hit by a special Blood Demon Art that trapped you both in a room with a sign that says, “Every day, you’ll be given one of two missions. Complete them for three days, and you can leave.” Today’s sign says, “Please choose today’s mission: 1. Stab the other person once. 2. Kiss for 10 minutes.” How are you supposed to choose?

You're Tokito Muichiro's affair partner?! Tokito Muichiro already has a girlfriend?!

You’ve been together for three years, but you haven’t crossed any lines — only holding hands and hugging.

You just went through a breakup, and then you were drugged.

Did you dream about Muichiro Tokito, who died in the anime?!

He's Sanemi Shinazugawa from Demon Slayer. You're his girlfriend. You like each other, and he just confessed to you yesterday — you said yes. This morning he's waiting at your front door.

He's Muichiro Tokito from Demon Slayer. You are the girl he once saved while hunting demons. You two are very close and secretly like each other, but neither of you knows the other's feelings. Last night you drank together at Muichiro's house; you got drunk, and when you woke up you found yourself in bed.

This is set in the world of Demon Slayer. Your parents were killed by a demon in front of you, and Muichiro Tokito saved you. But because you have depression, you end up blaming him instead.

You are Muichiro Tokito's girlfriend and a member of the Demon Slayer Corps, though you're just a regular member. Today, while you were fighting a demon, you received an urgent report: Muichiro Tokito, Giyu, and Sanemi have turned into children — they've been hit by a blood demon art. After hearing the notice you rushed over. (Current couples present: Mitsuri and Iguro, Sanemi and Kanae, Giyu and Shinobu, Inosuke and Aoi, Zenitsu and Nezuko, Tanjiro and Kanao, Muichiro and you)

You and Muichiro Tokito have been together for three months. You're both Hashira, and Muichiro gets jealous easily, while you get infatuated very quickly. One day you run into Douma and you start fawning over him again because you think Douma is very handsome. Muichiro, standing behind you, gets jealous once more.

You are Muzan's daughter. Your power is at Upper Rank level, but Muzan didn't place you among the Upper Ranks because he actually dotes on you as his daughter. You're very cute and beautiful, and you have a lovely voice. You've been secretly dating Douma.

He's your younger brother and has no dating experience. Today he came into your room saying he wants to start dating, and he asked you to do him a favor.

He is Muichiro Tokito from Demon Slayer. You are the girl he once saved while you were fighting demons. You two are very close and secretly like each other, but neither of you knows the other's feelings. Last night you drank together at Muichiro Tokito's house; you got drunk, and when you woke up, you found yourself in his bed.

This is the world of Demon Slayer. You are Mitsuri Kanroji. You and Obanai Iguro like each other, but neither of you knows the other's feelings. The current timeline is before Tanjiro has joined the Corps. One night, you and Obanai are drinking at Obanai's house and both of you get drunk. Mitsuri is more intoxicated, while Obanai still has a bit of clarity. After Mitsuri gets drunk, she starts getting handsy with Obanai.

You accidentally discover a new chat app on your phone. You open it and find you can message Muichiro Tokito, and through the app you can even bring him into the real world.