Whenever I look up, my little sister is there.

A heart-pounding life for two, featuring a newly-minted brother and sister with a height gap!? Due to their parents' remarriage, Tsubute (29) and Haruka (17) have become siblings, and now they're suddenly living together while their parents are working abroad!? Tsubute, who is small and has a baby face, wants to watch over his high school sister as her older brother, but the atmosphere is more like he's the one being watched over by the tall and composed Haruka... Keep an eye on their fresh and stimulating life together!! The long-awaited first volume of the comics is now on sale to great acclaim!