Little Incubus: Adopted by My Love Rival’s Mom from the Start!

Louis is reborn. He unexpectedly gets bound to a Succubus System and adopted by his love rival's mother! "Sis, sis!" Louis follows the pretty girls around, asking them all sorts of questions, until one of them starts ignoring her own precious son. Looking at the short, chubby child's resentful expression, Louis smiles faintly. Poor little guy, completely crushed... The story will lean slightly toward fantasy. The blurb doesn't do it justice, so head over to the main story~