I Rely on My Sister to Practice

I have traveled through time and space a lot. After time travel, he actually has seven sisters, each of whom is related to him by blood. You heard me right, why are other people's sisters different from mine! Before time traveling, I had read a lot of novels with similar settings about sisters. Other people's sisters were all adopted, but my sisters are related by blood, Lan Shou, Shiitake Mushroom! But you and my sisters are pretty good to me. After all, you are just a younger brother! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.