[From Essence of Purity]: Takuma Ban, the only son of the family of Ban Hokkaido, arrives in Tokyo with a mission: find a suitable wife ... with the help of his cow Meaari. Jumping through the school fence when he carried Mearari on his back, he suddenly meets the girl Yuki Selfzima. A minute later, he decides that she will be his wife. Unfortunately for Takuma, Senior Brother Yuki, Ranmar Samajima, completely opposes it. Of course, the fact that Meaari seems to have developed an instant "animal" attraction to him, only enhances the disgust of Ranmar to Takum. Takuma is determined to make Yuki his girlfriend and this, despite the serious "objections" by Ranmar. However, when not only Kay Endzhuji, but also their own family Takumi is beginning to participate, everything becomes a little ... "chaotic."