I want to respect Koutaru, but he's so senseless, it kinds of hurt. Says he loves Kuro, but honestly doesn't actually care about her, at all, just her looks. Then, even when he's told about his childhood friend, who quite frankly is probably holding herself back for him, he doesn't seem to be the type to reciprocate her feelings in the slightest, despite it being best for all 3 involved.
I know Kuro loves the family far too much to just leave them, and it's quite clear she's been through a lot, so I won't say anything more about her circumstances, but still. Good luck.
Like honestly, right now, I want both Hikari and Kuro to win with their happy ever afters, and let him just shallow loose in his own loveless world if he chooses too. Really hope his status changes, because I'm invested on the overall dynamic...