The Angel Next Door Spoils Me Rotten, Vol. 4 (Light Novel) - Saekisan

IT'S TIME FOR CHANGES IN HEAVEN! To take his relationship with Mahiru to the next level, Amane works hard to improve himself so he can stand confidently beside her. However, Amane's slow-and-steady approach may not be enough, as Mahiru takes bold measures to convey her feelings that Amane can't afford to ignore... How will Amane respond to the devious actions of the sweet and beautiful angel?