Ojousama, Yankee Shitsuji de Gozaimasu

Karasuma-kun, who had been in a fight, fell in love with the owner of the butler cafe, which is full of masculinity! He asked her to work part-time at her shop every day. It's a Yankee, but it's very popular with young ladies for his clumsy efforts! Junjo Yankee's constant love is...!?

(Source: Flex Comix, translated)