Unless there's some really good character development, I think the seme is a really unlikable character. I get his feelings were hurt in highschool, but the uke had no obligation to like him and he was honest by rejecting him right away. Most people get rejected at least once in their lifetime, but they don't plan on taking revenge, especially not after 15 years. Also,interfering with someone's work is messed up on so many levels.
I didn't like the main couple at all, the uke just straight up assaulted the seme and was forgiven in no time. The second couple is cute but they also played a role in the assault. Overall it just makes me uncomfortable and I skipped through the last two chapters because the fact that it just ended with no resolution regarding the rape part just made me mad.
This is not supposed to be a fluffy,wholesome story. The seme definitely has some kind of disorder caused by the trauma he faced in high school. And the uke too definitely was not in his brightest moments. However you look at it,rape and kidnapping is never okay,but there's a reason behind it,as unacceptable as it may seem. I'd choose this story over any of those yaoi manga that use rape as a prop,just to make things more spicy. It's not gonna be a healthy relationship,but in its own sick way this ending works and gives a little bit of hope to the reader.
I was so worried since chapter 52, but it turned out fine