He also wrote the comedy light novel series, Imouto Sae Ireba Ii., which is also getting itself a TV anime adaptation!
However, he only has a”Perfect” little brother named Chihiro, who seems to be hiding something.
More details about this light novel will be revealed in the days to come.
The title means “It’d be Good if Only Little Sister Was Here”, and it follows novel author Itsuki, who is seeking to create the “Ultimate Little Sister”.