
So, i want to write down my take on the 'pedo thing'. In so many Japanese BL stories heavy themes are used as something light and redeemable in the most casual way; this is an ongoing and unfortunately a popular trend.
That being said, i think this particular story is using the ' pedophile nurse ' as a bait for the MC. It is used as a narrative device, a tool, a reason that draws Aoki toward the nurse. The first few chapters are very confusing and this is why many have misunderstood it.
Here are the reasons that i think will cross out the possibility of any sexual interactions between Tengoku and the students.
1) Tengoku is definitely a problematic character. He is manipulative and has many non-consensual interactions with Aoki (the mc) So, I don't think the author will shy away from explicitly showing and stating that Tengoku had indeed done sexual acts to a minor.
2) Kasai said he didn't. ( to make one point clear, the flashback panel in the beginning of the third volume from when kasai is talking to tengoku after his graduation, looks like tengoku is jerking off kasai, and the sfx is 'squeeze', but this scene is exactly the same scene that Kasai is confessing to Tengoku in the 1st chapter of the 1st volume and the 'squeeze' sfx is actually refering to Kasai holding onto and squeezing Tengoku's coat. Tengoku is not jerking him off. This is a misunderstanding guys.)
3) His former student (math teacher) said nothing of the sort. If tengoku really had done anything sexual towards the former student/ the math teacher he would have actually become hopeful to have a relationship ( even only physical ) with tengoku after he graduated. But he had given up on any hope of them becoming an item. He was even shocked after he saw another man shouting ' I love you ' to tengoku ( eventhough the whole situation was a misunderstanding ) if tengoku had done anything to him, he would have known that he was into guys, no reason to be surprised and even hopeful enough to chase after him after finding out he is into guys.
3) Tengoku himself stated that " he didn't want to be a public offender or lose his job by doing something like that " This seems a reasonable reason why a character like Tengoku won't actually do such a thing. Tengoku himself was a victim of SA and had sex as a minor with adults for a few times ( and he had initiated them ) so even if he doesn't see the problem in the idea of sex ( of any kind, to any degree ) between a minor and an adult, he obviously don't want to become a criminal, a sex offender and a pedophile. ( what i mean is, even if this character's moral code is ambiguous, he is logical and smart enough to not persue such things simply because they won't have a good impact on him.)
4) Aoki doesn't like troublesome things, but the SA allegations were something he wouldn't ever turn a blind eye to if it was actually true. His moral code is transparent. He is not righteous all the time, but he does care for the kids. So if the assault was true, he wouldn't just brush it off and ignore it. That would be very out of character for him.
5) So why so many sentences in the first few chapters are actually suggesting it? We heared Kasai say tengoku touched him, Tengoku saying Kasai opened his legs for him, and the rumor around the school saying that "one will lose their virginity if they go to infirmary". I Think these are only the narrative devices to get the nonchalant Aoki sensi to keep track of and approach Tengoku sensi and that's it. Aoki says that he does not want to face and talk with Tengoku clearly in the first chapters, cause he doesn't like him, and he avoids him most of the time. Yes the first time he went to talk with Tengoku, it was about Kasai's well being. But that would be the end of their interaction if Aoki wasn't suspicious of him and wasn't keeping tabs on him. So the only reason that the theme is implied in the story is to get Aoki to know tengoku.
6) the story has used another misunderstanding as a narrative device in order to push the plot forward; this time it was when Tengoku was supposedly confessed to by his older brother ( and the formor student witnessed it ) but this was not the truth. I honestly thought there was something problematic ( in a romantic sense) between the brothers at first, but that wasn't the case. This was only a tool to drive the story to a point where the brother shows up, the formor student shows up and things happen between the two main characters that results in them dating eachother. That's it. So i believe the thing with Tengoku being a pedophile and assaulting students is the same as this one. (not the most tasteful way to feul the story, I can argue on that, but well.)
Tengoku is a very manipulative person, the rumor might be partially orchestrated by him in order to keep many students away as much as it is possible. I mean the infirmary is vacant most of the time, lol. And he probably said what he said about Kasai only to mess with Aoki, or maybe to say that Kasi had suggested to have sex with him ( i think a little of both). Kasai saying that he was touched by Aoki sensi is probably just a misinterpretation also. I Don't think he meant it sexually, cause many things that he said was interperated badly by Aoki sensi, lol.
His so called "lessons" are probably just an exclusive sexual education. He probably talked about queerness and gave advice on sexual matters to the closeted gay students who had visited him. (not demonstrating it though) he might have hypothetically teached them about the sex between men and maybe how to masterbate or such. He also support the kids and provided a bit of a safe space for them to act freely without any supervision. It might have been overstepping, but i don't think he cares about cautious approaches. He wasn't a pediphile predator though it's easy to interprete it that way.

I loved how they just communicated more with each new conflict. Usually you start to notice how different you are from each other in an arguement, and often times this can be discouraging, so you might end up communicating less to avoid frustration. But i loved how they turned up their game and talked more and more with each other in time (=・ω・=)

Guys, the main story is actually only the first season, the second season also lived to the hype of the first season cause it contained smut scenes plus more obstacles both in the political scene and romantic scens plus a new villian to pump up the plot line alongside with many new minor characters and their relative sub plots. But the third season is more like a series of special episodes, mostly about the side characters that we don't actually care so much about. the episodes on the main couples are actually rare and the romantic arc of the side couple that we actually waited so much to see, feels half assed and rushed, they didn't developed romantically much and their smut scene was meh. So, this is the weakest season tbh, and the change in art style is msybe not so bad, but doesn't seem like an upgrade at the same time. I just love this story and the characters are very dear to me, so i wish the author wether stops continuing this series so much, or shift the attention of the story to meaningful arcs, reasonable developments and new complications that they face.

It's kinda funny since this has been my favorite season only cuz I was happy to see characters I've grown endeared to so happy. I will agree it has its problems especially concerning the second couple and being VERY confused with what they hell they're planning with the tower master. But overall I'm happy and intrigued to see the princess grow up and hope she gets with her friend.

Oh yeah, I AM still enjoying the story but in a more underwhelming way. Because, If small, daily short stories about their sweet life, etc were the only thing the author was planning on showing us, they could have released it as special episodes, not a whole season. I think a season needs a more solid storyline and certain other elements to maintain the original flow of the manhwa
What the helleya