stories like ao no flag or skip to loafer?

Try spirit fingers
https://www.mangago.zone/read-manga/spirit_fingers/

OMG FELLOW AO NO FLAG LOVER FAWKKK I LOVE YOU I DONT HAVE ANY RECCS BUT UR A GOAT

actually try no home/homeless!!

NO HOME & AO NO FLAG FAN???! holy shit peak taste right there

tysm!! ٩(๑❛ᴗ❛๑)۶

Slice of life Seinen?

omigosh yes!! exactly! ( ≧Д≦)

This and the other author's work should be right up your alley ^^

https://www.mangago.zone/read-manga/seihantaina_kimi_to_boku/

Ah, I adore Skip to Loafer. Some of my other favorites are

https://www.mangago.zone/read-manga/kono_oto_tomare/

https://www.mangago.zone/read-manga/blue_period/

https://www.mangago.zone/read-manga/the_fragrant_flower_blooms_with_dignity/

https://www.mangago.zone/read-manga/hirayasumi/

Not entirely the same vibes, but they're all about people being people.

https://www.mangago.zone/read-manga/sakamichi_no_apollon/
https://www.mangago.zone/read-manga/okaeri_alice/
https://www.mangago.zone/read-manga/fukakai_na_boku_no_subete_o/
https://www.mangago.zone/read-manga/tasogare_memorandum/
https://www.mangago.zone/read-manga/10th_you_and_i_fell_in_love_with_the_same_person/
https://www.mangago.zone/read-manga/busu_ni_hanataba_wo/

thank uu sm! (∩˃o˂∩)♡

thank yewh! you have great taste ദദ(｡• ,<)~✩‧₊

waa thank uuu sm!! (,,>ヮ<,,)

Shimanami tasogare
Boys run the riot
Hanayome wa Motodanshi
Kono oto tomare
90s cram school for unripe apples
Madoka no Himitsu

thank yuu (˃ ˂ )