https://www.mangago.me/read-manga/when_the_killer_falls_in_love/
Reminds me of this
Leaving one recommendation here, tell me what you thought about it later :)
https://www.mangago.me/read-manga/on_or_off/
Official synopsis: Yiyoung is building a startup with his college friends. They get a chance to present their proposal to SJ Corporation, one of the leading companies in the country. But in the meeting room he sees Kang Daehyung, the extremely handsome company big shot that's so very much his type, and Yiyoung's heart starts to race...! Can pretty-faced Yiyoung win both in love and his career?
Seme is not a thug, but there are lots of similarities: big older top (Mr. Kang) and small, blonde and cute bottom (Yiyoung); said bottom fought hard for life opportunities, is gay and likes top; top was never in a same sex relationship before.
Aside from the common points, On Or Off is a masterpiece on its own. Yiyoung is so sweet and appreciates his friends a lot, being also very respected by them. His friends love him for tolerating their difficult behaviors, and they together make most of the comedy scenes.
Mr Kang is very respectful, has a big soft spot for Yiyoung and helps him and his friends a lot. The friends thought Mr Kang was big and scary, but they all ended up developing a very cute relationship, it's very healing to read.
And it seems I just convinced myself to read it all again hahahah
And there's a sequel:
https://www.mangago.me/read-manga/love_work_balance_jujucat/

I dont typically read manhwa bl but i saw the hype about this getting animated and wanted to check it out and … its absolutely charmed me. If anyone has recs that are like this lmk ٩(๑❛ᴗ❛๑)۶