Hmm. During corresponding week I mentioned I thought it actually went well:
Of course, it was a little awkward, but also very mature and accepting, and would it be that different in case of 20somethings year olds? I’m not saying they look like they’re in their 40s 
(But idk, I think admitting that you’ve fell in love with someone is stressful enough for it to possibly be awkward at any age)
Anyway, now I feel like my impressions about this manga are completely different from anyone else’s 
- Kotone being a teenager not an excuse, because in my experience teenagers are usually the ones more open-minded than adults
- me not understanding a scene because I didn’t think it was normal to remind a friend about a trash day
- and now about feeling the characters are late teenagers/young adults without any specific age
and technically about a confession too, although here at least @NyappyTiramisu agreed, so I guess I got some backup for once
EDIT: it turns out I didn’t catch the irony