Lonely Heart
Oh boy, this one was a rollercoaster. It was weird at first and very uncomfortable that the love interest had the same face of the mother when she was young so I was very cautious. But by the end it all made sense. He was seeking for the warmth, and comfort and familiarity. And she couldn't let go. Sabishinō wasn't merely Hiroki's feelings but the mother's as well as the past kept them both in it's grip. The past only one of them really knew and the other created an idealized version of it