Any good stories with brothers that aren't incest, just platonic bother relationship?

Fma?

https://www.mangago.me/read-manga/death_delayed_for_a_short_time_because_of_the_will/

https://www.mangago.me/read-manga/gakuen_babysitters/
https://www.mangago.me/read-manga/ootani_san_chi_no_tenshi_sama/
https://www.mangago.me/read-manga/aka_chan_to_boku/
https://www.mangago.me/read-manga/yuzuki_san_chi_no_yon_kyoudai/
https://www.mangago.me/read-manga/halal_food_with_me_and_my_little_brother/
https://www.mangago.me/read-manga/bokura_no_shokutaku/

Enjoy

thank you!