Some people might find it toxic but just as some of the comments say, it's a realistic portrayal of how relationships are. This is the second time I've reread this. It's been years and somehow I found myself back here again and funny enough it's Christmas. I'll probably reread this again tho. I can't say it's one of my faves but it's one of those that have definitely stuck with me. Ironically, I find it relatable with how much of a doubter and overthinker he is. I know I shouldn't overthink but people change and it's scary.
Sojou No Koi Wa Nido Haneru