Responses
So...
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Spoilers
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I'm only using Google Translate, but based on the pieces I can put together, the Uke's husband might have left because they couldn't have children biologically.
here's the raws for chapter 3
( https://myreadingmanga.info/service-boy-hontoku-sensei-wa-benki-ja-arimasen-3-cn/ )
also the principal is kind of cute ngl, hoping for the best for him (▰˘◡˘▰)