Lmaono

https://www.mangago.me/read-manga/suezen_kurau_wa_otoko_no_tachi/
https://www.mangago.me/read-manga/mukai_no_heya_no_neko/
https://www.mangago.me/read-manga/kimi_wa_boku_no_koto_o_suuhai_shisugiteiru/
https://www.mangago.me/read-manga/my_level_is_too_low_to_fall_in_love/
https://www.mangago.me/read-manga/kimi_to_no_dogfight/
https://www.mangago.me/read-manga/fake_fact_lips/ this has a sequel :3
https://www.mangago.me/read-manga/kishi_sama_ikuseichuu_to_doukyo_shimasu/
https://www.mangago.me/read-manga/souteigai_no_sweet_marriage/

my personal faves!! there are college and office based here and all of em are mangas ^__^ !!

No rape! some are highschoolers, don't work in office, one or two are historical, non human/half human, and have powers:
Unsleep
Unrequited Love Rendezvous
My Way With You
Ookami-sama no Koiwazurai
White Pawn
Glasses Cloth and Playlist
Love Shuttle
Love at First Fright
Fated NOT to Meet
Omawari-san, mata Ashita
No Littering
Sonna ni Iu Nara Daiteyaru
Romance, But Not Romantic
Protect your purity!
The Secretive XX
The new employee
My Guildmate Next Door
The Man At Night
I Seriously Can't Believe You...
Mother's Spirit
Afterglow
The best luck of my life
Dead or alive
On a Restless Night
Outcasts Bound by Fate
Tell Me You Can Hear It
Love Plan
Wagging the Tail Webtoon
Once Upon a Deal
The Pain in My Neck
The Way to Love an Alien
Change of heart
Ask to unlock
Heat Stroke