Responses

I think the problem with Kaoru is more of a "curse" thing where everyone he likes ends up meeting their fated pair and falling in love, so he himself couldn't ever have the kind of relationship he described in the prequel - although those do exist. Buuuut we all know Hara is his soul mate so ╮( ̄▽ ̄)╭
Didn’t Kaoru say this in the prequel, something along the lines of how even if two persons’ red strings are connected to each other, it doesn’t mean they will be together and that he has seen many people like that find happiness with their current respective partners even without the connection of a red string. So, even if Hara’s red string is connected to another it doesn’t mean Hara is gonna leave him. The previous partners of Kaoru that left him seem to me that it’s not mutual love; he loved the sister-in-law but she prob didn’t, his ex gf prob loved him but he’s prob just in it for a relationship etc; the intensity of their feelings doesn’t feel matched up. However, Hara feelings for Kaoru seems genuine and strong, it’s as intense as how much Kaoru loves him, so wouldn’t this strength overwrites the suspected fate of his red string? Plus, I think a lot of us readers are speculating, it’s not that Hara red string is not connected, it’s more like it’s already been connected to Kaoru, just that Kaoru himself cannot see it (but maybe his nephew can) So.. I BELIEVE IN THE STRENGTH OF THEIR LOVE (๑•ㅂ•)و Having bad past relationships doesn’t mean you will never meet the one who’ll stay. Just have to take that leap of faith.