Uchi no Futeki na Gangster

Ranko Hanazame, the daughter of a yakuza, yearns for "normal love." However, she is always getting disturbed by Sumikawa, a young leader of their gang. Sumikawa is said to be the most vicious person in the underworld, and just looking at him makes others run away screaming! And yet… Why does he always stick so close?! If she ever fell in love with him… Ranko would have to say goodbye to her dream of a normal romance! A heroine that tries hard not to fall in love with the wrong person, and the gangster that loves to tease her begins here!

(Source: Hakusensha, translated)