Does mangago have this webtoon?

I swear I’ve seen it here before!!

Sincerely i became a dukes maid different art style tho

I'm not sure... But I sure know who that artist is. They're one of my biggest inspiration in drawing :" . I really love their art style. They're called boychaaa on twitter.

Literally the same story, different art style:
http://www.mangago.zone/read-manga/sincerely_i_became_a_duke_s_maid/

What you have right there is the promotional comic used to promote the novel version of that story called Unripened. Art style looks familiar because it's by a famous twitter artist.

I like the original art style so much more! He actually looks 13 instead of 8