Popular rich seme and shy poor uke
https://www.mangago.zone/home/mangalist/1222305/
Guys with kids
https://www.mangago.zone/read-manga/kazoku_ni_narouyo/
https://www.mangago.zone/read-manga/when_the_yakuza_falls_inlove/
https://www.mangago.zone/read-manga/whose_baby_is_it/
https://www.mangago.zone/read-manga/sekai_wa_shippo_de_dekiteiru/
https://www.mangago.zone/read-manga/hinadori_wa_shiokaze_ni_madoromu/
https://www.mangago.zone/read-manga/papa_datte_shitai/
https://www.mangago.zone/read-manga/papa_no_sukinahito/
https://www.mangago.zone/read-manga/futari_de_papa_hajimemashita/
https://www.mangago.zone/read-manga/on_doorstep/
https://www.mangago.zone/read-manga/love_me_or_i_ll_kick_your_ass/
https://www.mangago.zone/read-manga/koi_ga_ochitara/
https://www.mangago.zone/r/l_search/?name=Niyama
https://www.mangago.zone/r/l_search/?name=nerima%20zim - Most of their works have a very older uke
https://www.mangago.zone/read-manga/joou_to_shitateya/
https://www.mangago.zone/read-manga/kirei_ni_shiteyo/
https://www.mangago.zone/read-manga/yamada_to_shounen/
https://www.mangago.zone/read-manga/gaman_nante_o_yoshinasai/
https://www.mangago.zone/read-manga/gohoubi_ha_shitsuke_no_ato/
https://www.mangago.zone/read-manga/nii_chan_harada/ -a teeny bit messed up
https://www.mangago.zone/read-manga/shota_oni/
https://www.mangago.zone/read-manga/boku_no_mama_chan_43_kaihatsu_nikki/
https://www.mangago.zone/read-manga/castle_mango/
Either:
- big age gap
Or
- one of them has a kid
Or
- poor x rich (or royal x normal person/servant or something. You get what I mean)
-hell, anything where one is royalty is good too.
Doesn't have to be a story with all of these together haha, just anything close to one of them will do ^^