I think the mc imagined his bf's post-puberty self wbisper into his ear or smthn . As for the last panel, maybe it's the eldest brother coming back for a visit? He was looking forward to seeing shuuto again.
Girl that was his grandpa
GRANDPA?!?!?! THE GUY AT THE END OF THE CHAPTER????
So I see now the phone said grandpa and I guess the dude do be looking haggard arpund the eyes. But it's still a very weird transition from the guy imagining shuuto's older self to suddenly someone (probs shuuto or not Idfk) talking with his grandpa on the phone and the grandpa being ph I womder how my shuuto is doing~~
I think the eldest brother was just talking to the grandpa, and is coming to visit them and shuuto. Because shuuto lives with his grandpa, right?
See that makes more sense to me, and the elder brother is also like 8 years older than shuuto, tho Ig life is really beating his ass if he already be looking like he's in his 30s
You're right that was the eldest brother talking to his grandpa on the phone. We're gonna meet the family next chapter. (●'◡'●)ﾉ
I didn't understand the last chapter