(Reborn! + Anime Crossover) Underestimate Mahjong and You Lose

One-line introduction: A girl's heart is pure, and the power of a tube is infinite. (?! )

Overall summary: There was once a mahjong table with one player missing, waiting for her to join in, but she didn't cherish the chance. The little girl who loves eating buns and has transmigrated five times says she never wants to see another game short one player.

Yiping: Come on, come on, let's play mahjong! We're one short, hurry up and join us.

Demon King R: I never play low-class mahjong. (What kind of class are you looking for in mahjong, you idiot!!)

Basically, it's about a hapless girl who transmigrates into Yiping's world, where she drags Demon King R into teaching Rabbit 27 how to play mahjong, with various crossover characters appearing along the way.