It's just their game-3 (Pixiv Fanbox)

Houraisan Kaguya: Well, you won this time. Fujiwara No Mokou(Proud): So please grit your teeth. Houraisan Kaguya(Tongue out): Of course, you can do everything you want, for example, order me hanged myself to die. Fujiwara No Mokou: But you can't die. Houraisan Kaguya: Yeah, it's a pity ...Uhhhhhhhh... Fujiwara No Mokou(Kick): Please enjoy it. [When Fujiwara No Mokou put Houraisan Kaguya down, Houraisan Kaguya strangled her neck again~]