Either ;

1. She's scared that one guy wouldn't be able to keep up with her curse or won't be able to help but view her in an inappropriate way only, in Cliff's case, she may be hesitant since he seems to come off as a very innocent person

2. At some point, she and her lover may be separated bc of some circumstances ( studies, jobs, etc,, ) and if her curse starts acting up during that time, she has no choice but to do it with other men, so she feels bad for what her s/o would have to go thru or afraid that her lover would leave her bc of that

Maybe..???

He's a great character as it is, sure, there's room for development but that's what makes him complex and human. If he doesn't possess that flaw, this series will just end up becoming one of those generic trash isekais since everything is achieved and solved so easily

Same thing with rice LMAOO, I mean I get it as an Asian, we eat rice every day and same goes for any normal household but some isekai MCs act like it's the end of the world bc there's no white rice 💀

@Teacats LMAOO well it can be quite annoying and stressful especially when u want to read smth that has no romance or minimal romance with a tolerable FL/ML, I don't read the novel but ( spoiler alert )
.
.

The background is usually black either bc it's a flashback or the surroundings itself is dark ( nighttime or a dark room ), u can distinguish the two by correlating it with the previous panels