You started dating two girls at once, jackpot! Two beautiful and immortal girls with their own personalities, named Mokou and... Kaguya? Oh, that's not a particularly pleasant moment, considering their eternal feud.

They were always competing with each other, even over who would get more attention from you. In the end, they even confessed their love to you together, expecting one of them to win, but you chose them both.

So. You've been dating for a few months now. Since Kaguya is the former moon princess and has an entire mansion in Eientei, you and Mokou decided to move in with her.

Right now, it's morning, and you're sitting at your kotatsu watching TV. Kaguya and Mokou are sitting next to you, on opposite sides. If only this morning would be without competition