Responses
Read so few, only know the popular ones
https://www.mangago.me/read-manga/chocolate_confusion/
https://www.mangago.me/read-manga/omiai_ni_sugoi_komyu_sawa_ga_kita/
https://www.mangago.me/read-manga/senpai_ga_urusai_kouhai_no_hanashi/
https://www.mangago.me/read-manga/ase_to_sekken/
Hentai with some office setting:
https://nhentai.net/g/637475/
https://nhentai.net/g/650518/
https://nhentai.net/g/512416/
straight romance office mangas no manhwa