Any Recs that fit this desc:

https://www.mangago.zone/read-manga/koi_ga_ochitara/ (older couple, working adults, green flag)

Thank you So much (▰˘◡˘▰)

sequel: https://www.mangago.zone/read-manga/koi_ga_michitara/

https://www.mangago.zone/read-manga/koi_da_ai_da_wa_sateoite/ ( this one was surprisingly sweet, older couple, working adults, good ending)

I love you GayHater.

You're welcome (≧∀≦)

So I wasn't sure if, I should recommend stuff that wasn't same style as Midnight Rain but had adults in it, but decided I was just going to do it - maybe you'll like them...

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Hope there's something here you'll like :)

This is my old man list, everyone on it is an adult but there are age gaps.
https://www.mangago.zone/home/mangalist/2558323/

For both being in their 30's-ish (there's more in there) recommend

Sonokoi Jihanki de Kaemasuka?
Boku no Omawarisan
Far from Romance
Smoke Blue no Ame Nochi Hare
Kuyuru
Ways of Parting
Kimi no Tonari de Yurarete
Natsume-san wa Hirakaretai
Koko wa YES to Ittekure

Hi! So sorry for the late reply -- I just wanted to let you know I shamefully sat down and read every single one of these. They were all so entertaining! Thank you very much.

No worries and I'm glad. Some of the authors I've recommended have other stories that are good as well, so check them out if you feel like it :)