At least it seems this is going to stay vanilla, because SPOILERS
In the current chapter, the bitch of an ex girlfriend he has, which abandoned him, hit him hard, made him depressed, manipulated him into having sex with her as "last time sex" now wants him back, and he has ABSOLUTELY NO INTEREST AT ALL, she's now blackmailing him into being his boyfriend again, and if he doesn't complies, as she's the superior of the cat girl goddess with huge breasts and inverted nipples, she threatened him with getting that girl fired, unless he stays with her. He accepts to protect her, but he's very mad about it.
In the last episode, he was extremely pissed in the date to the point everyone around really see he's pissed, and she's trying to get him horny to conquer him back, as she's addicted to his penis. I'm afraid that then he still doesn't want her, but she will use that to make him break up with the cat girl, so he stays alone and can have him back.
I haven't been this mad about a character like this since another manhwa non-h I've read, in which a guy got scammed for a house and ended up living with a girl there in exchange of being the housemaid, and ended up being in that situation because his ex gf got him fired from the company he was working on, and then the ex gf that got her position, kept using his old stuff claiming she did them to keep the job, and then contacted him to get even more stuff.
I wanted to fap, not to end up this fucking pissed and invested in the plot, ffs.