For pg. 23, Yamada makes it sound suggestive by saying "kya" and having hearts in the speech bubble, like she and Chifuyu are both having an "intimate" moment, so to speak. But in the last panel we see that what's really going on is just the two of them looking at the damaged IS, nothing intimate about it. It isn't the best punchline to end the manga on, but you work with what you've got.