I haven't read Our Sunny Days but if you're looking for something that's heavy on the family aspect I have a few recs! Though they're all manga
https://www.mangago.me/read-manga/hinadori_wa_shiokaze_ni_madoromu/
https://www.mangago.me/read-manga/bokura_no_shokutaku/
https://www.mangago.me/read-manga/kazoku_ni_narouyo/
https://www.mangago.me/read-manga/papa_x_papa_to_de_sorezore_yattemasu/
https://www.mangago.me/read-manga/boku_no_papa_to_papa_no_hanashi/
And the only manhwa that comes to mind
https://www.mangago.me/read-manga/surge_looking_for_you/
TYSMMM!
https://www.mangago.me/home/mangalist/3148147/
fluff yaoi...
I need more bl like The Sacred Serpents Seduction and Our Sunny Days... They're my favorites. I guess I just need more green flag bl's, because it's hard to find any GOOD ones If anyone has any suggestions PLEASE let me know!