We got two time skips so far and four people left to check in on. It’s possible we time skip right to the end of college if it keeps with the year long jumps. So more version of adult them possible.
I do miss Sumiko’s adult stuff so them growing up has also made me excited for whatever she does next. Whenever she’s been used in the yuri purity wars on social media against other series I’ve liked I’ve wanted to go “she’s done messed up stuff too!” She’s been on her best behavior for years now but those last couple pages had me going for a moment.