Yuuma and Kaito broke the suffering-filled cycle they were trapped in due to their previous lives. Yes, it wasn't Touma's fault but his resentment and Hayato's regret carried on into their future rebirths (looking at the other three spirits, who couldn't move on). If they didn't it would have continued and made Touma (and Yuuma/future lives cause they would be dealing with it) worse by going off the tradition of rebirth. And people going off about how Touma harmed everyone around Kaito when he was younger, like that kid.
Touma being death is worse than his marrying someone, cause at least Hayato knows that he is alive, but instead the person he loves is dead and it is all his fault. That fucks up a person especially if they loved and care for the deceased, causing his self-hate and regret. Hayato probably died young, too.
Also, since it was back then Touma would probably eventually have to marry that was what was expected of him even if he was sick, his family could marry him to a woman, so he at least had an heir.
Sorry for the long post, I like discussing things that my brain going. ā„ļ¹ā„
Yeh, it's that era. But it was kinda hinted that touma died after it all happened. Not just his heart, but him literally. Like what he said, hayato should have talk to him. And hayato saying he left a letter, thats a nope such things should be discussed face to face.
I don't have anything against the present couple. I'm happy for them. I just really felt for touma
Yeah, I agree, he should have told him about the situation instead of just writing a letter, and for that, he is a coward which I'm glad he admitted cause he was. It looked like when Touma was walking in the water, was showing that he was dying and drowning in betrayal (that was my interpretation). Also, because of their appearance, they probably died young (and so did their future rebirth which is sad to think about).
Honestly, just happy he found peace because if this was a different story he might have exorcise or used has a exorcist's weapon.
I felt pity for touma to the point that I don't want kaito and yuuma to end up even though they're just a reincarnation. It's not their fault, it's hayato but i wanna see his devastation that he married someone with the reason to protect touma but he didnt even see that the very act killed touma inside.