Basically the Seme wasn't going to reincarnate due to sins but attaching his soul to the MC with that carving needle on body ritual made it possible.
However meeting MC in each life wasn't a guarantee, he previously lived 9 lives without meeting MC in a span of 60 years.
At first Seme didn't have any memories but his headache went away after seeing MC. Gradually he began to remember, he's possessive, controlling and manipulative. He just wants to have all of MC. He wants his love, trust, All he didn't achieve in previous life but doesn't intend to return the same affection.
He's acting like a decent person but it's a facade. He's still twisted, the one that kidnapped MC seems to be under his instructions. How he was right outside the car to "save" him said everything.
The MC is attached to the seme that he genuinely believes is a different person from his past life. He "kind,attentive/ dependable, affectionate, patient and handles his mood swings well" different from the seme who was aggressive, impatient and bully like.
He doesn't know he isolated him in school and is the same toxic person as last life...
Correction seems like they did meet and had all lives together but none ended well...
So bassically after the uke died or smth and their soul was combined, he was still attacked to the seme??? Spiritually? But still can be seen by others too??? And the seme somehow realised? Somebody tell me I'm right or wrong