Really great psychological romance. It took me a second read to fully understand it, but I feel that's really the proper way to experience it. First run through without knowing it was hypnosis from the start, and then the second. During the first, you can really feel how others see Kakine as a monster for using his hypnosis on Keidai-- and then in the second, you can start to understand it properly from both Keidai and Kakine's perspectives. I think after my second read through, Keidai had a fascination with Kakine from the start, so Kakine wasn't implanting false feelings into him; he had no reason to in the first place, since even he had no idea it was love, especially for himself. Kakine started hypnotizing Keidai to help him, ended up becoming interested in him in an almost therapist-like perspective, then fully became interested in him romantically (despite not being aware since he's so emotionally disconnected to the world) after Keidai himself in a state of pure honesty says he likes Kakine. While yes, Kakine then proceeds to "train" Keidai without his knowledge, that's the pure fiction part of the story. The rest of it, I think they're a lovely couple.
Kakine to Keidai