Weird to make the sauna scene start 30 minutes before the end, it looked like they were following the etiquette.
Wonder if is a translation mistake or the joke is on how we thought it was a normal session and MC made clear they were in for 6 times what is normal.
I hope this swimsuit chapter is normal and not a hail Mary from the mangaka, I know that introducing a new interesting character or jumping on fanservice is normal when votes are low.
The direction this story is going is weird, and that is more or less fine from the start, so is hard to say, until now the only thing I really disliked is how it was explained that MC hand can damage anomalies, when I thought he simply was absurdly good at killing.
And it still don't clicks right as I thought he used his tie to chop Yaer at the start, I beleived he was able to use anything as a weapon, making that he was born with the ability only in his arm feels wrong, cliche.

3時間 -> "san-jikan" -> Three Hours
Even I was confused while translating this part. It could either what you said, or the author might've made a mistake