I'm aware that the series turn hentai by the end (well, translator here! XD - in fact, I actually translated the whole already, but most chapters still needs to be edited, cleaned, typeset, etc. - and I would like to follow a "one chapter a day" shedule, if we can do that.
I think I will remove the Hentai tag for now. I initially decided NOT to tag it as hentai at the start, so the more readers have access to it at first. the first chapters are not hentai at all, just ecchi. that's what I think. it will turn smuttier, but it probably doesn't deserves the hentai tag until the later chapters. - I wanted to add the hentai tag, when we get there. In a sort of similar fasion as for example "Futanari no Elf", which initially started without hentai tag too. the main difference is just that that is ongoing while this is completed (with chapter 25. though I'm actually intrigued by that "1" on the cover, if it means it would get a sequel?) - by the way, that was why I set it as "ongoing" first. plus, to avoid some readers possibly getting confused that it's an oneshot, and mark it as "completed".
Tagging manga can be tricky... XD