Magical Marriage Lunatics is an rom-com VN with heavy moe elements bought to you by the same company and scenario writer as the fan-favorite Princess Evangile, and available for purchase at MangaGamer.
Plot / main theme of the VN is pretty thin; There are a total of 6 Heroines. The protagonist slipped into 4 alternate dimensions when he was a child and each time he met a girl there (btw this part is never fully explained; He simply just slips into the other dimensions in the past and the VN