Lunch box carelessly left at home gimmick? Check, got it out of the way chapter 1! Cannot swim and need to be led around by your hot, half naked sister's teats gimmick? Chapter 2, check! One of his love interests (Haruka) explicitly saying the action part of the plot is like some bad manga story in chapter three? Uh...check. Harem rapidly and inexplicably forming around a main character who is "wimpy and indecisive, but at least he tries his best!"...yeah, this manga is trash.