I recommend 'Monthly Girls' Nozaki-kun'. Although it's not solely focused on office romance, it has similar lighthearted and fun vibes. The characters' relationships develop in a unique way that might interest you.
You could try 'New Game!'. It's not a typical romance but has elements of it in an office setting with game developers. The interactions between the characters are quite charming.
One popular one is 'Wotakoi: Love is Hard for Otaku'. It shows the sweet and funny romance of office workers who are also otakus.
There are a lot of good love anime and manga. Here are some recommendations that I think are good: 1. Your Name. (Your Name): This is a romantic animated film directed by Makoto Shinkai. It tells the story of two young people who gradually understand each other and develop feelings for each other because of a mysterious power. 2 Asteroid in Love (Love in the Asteroid Belt)
Office romance hentai manga often features intense emotional connections and steamy scenes between characters in a workplace setting.
Doujin manga are often more fan-created and less likely to have official anime adaptations. Office manga might have a better chance if they have wider appeal and commercial viability.
You should check out 'Toradora!'. The anime adaptation beautifully captures the romantic tension and growth from the manga. The character development is well-portrayed, and the story remains engaging throughout.
One great recommendation is 'Ao Haru Ride.' It has beautiful art and a touching story of young love.
BookBub is an app that offers book deals and freebies. It's not strictly an app for office romance novels only, but it often features such novels among its free offerings. You can set your preferences for the romance genre and get notifications when there are free office romance novels available for download.
One popular yaoi manga with an office romance theme is 'Love in the Office'. It has engaging characters and a sweet storyline.