Ok so I just did a quick re-read of the entirety up to ch29. And all the people saying this is some weird karmic payback really need to stop. Nanase straight up confessed in chapter 1 and Momo never replied.
OK I did a reread of ch 1 and you're right, but man it left so little impact that I (and probably others) have completely forgot about it lol. I don't really blame Momo being dense at that point because it was really mixed in with all the teasing. She is dense after all the other things, but still can't completely blame her since Nanase has done so much to her under the pretense of "teasing" that I'd get that its hard to know when she is being serious.
Regardless if Momo was actually disturbed or only embarrassed still doesn't excuse that Nanase's limits are completely messed up. I mean... her limit is basically just before actual rape. Everything else she did was still sexual harassment. I know it's an ecchi gag manga and we're not really supposed to take it seriously, but because the author keeps poorly jumping back and forth between gag and serious moments, I can't help but feel uncomfortable with Nanase's behavior. Because of how poorly the author is handling the direction of this manga, it feels like the message the author is delivering is that what Nanase is doing is OK as long as you don't go as far Mary's actions.
Author intent is really important when it comes to stuff like this. Like if it's meant to be practically porn with all of the author's fetishes then I'm not gonna bother taking it seriously. But this one always gives off the feeling to me that there's a lesson somewhere and that we should take the actions of these characters seriously.
Honestly I prefer this over the senpais
Normally I would too because the senpai story, although cute and wholesome, is pretty generic and we've seen it a million times before. But God I really dont like how the author is handling Nanase and Momo's storyline at all.