Responses

I think that was the sensei remembering one of the times he took him out to buy him candy

I also think that scene is a flashback. Seme has wife and child. So if they are together, Kiyo would be only a hidden lover.
I would rather Kiyo studies, becomes a doctor and moving on with someone else.
ok, i'm not crying (not yet, waiting for next chapter to tear up my tears). i have a question. Kiyo finally moved at Tokyo, and the last page there is sensei. So, Kiyo is the sensei or he called for sensei?
so they are together?