I mean they first don't much chemistry since they were matched because of their compatibility rate but later they develop a pretty strong chemistry and stuff thats all I can say without giving any spoilers and as I said earlier its a yaoi manhwa to binge read so I would recommend you to read before sleep then it's a not bad manhwa, so I would say I recommend you to read its name is 151.20%

wait this kinda reminds me of the other guideverse story where the guide therapist manipulated 300 guides