English teacher Levi McDowell has a big and small trouble—the originally spacious and comfortable log cabin he lived in is already overcrowded at the moment. Let’s not talk about the Servant he accidentally summoned—Golden Darkness, Tohsaka Rin, who moved in under the banner of an ally, brought her Servants Kaguya and Lingxian for a buy-one-get-two-free deal. This situation is full of beautiful girls, so the owner of the hut, Levi's partner— —Ivan, the ancestor of the vampire, is extremely dissatisfied. Recently, even Mengmeng, the third princess of the galaxy, has moved in to join in the fun. It seems that the solution to this problem has reached the point of no delay... But then again, Levi is really busy recently : To deal with the enemies in the Holy Grail War, to help Yiwen lift the curse, to cooperate with Nagato Yuki's mission, and to occasionally play some heroes to save the beauty, or talk to the beautiful girls and so on... Seeing that there is a lot of trouble in Academy City... I have to ask myself to help, so there is nothing I can do to let this kind of trouble go for a while? As for after everything is over? Well... Speaking of it, it is almost time to change to a bigger house... …