組長娘と世話係•Kumichou Musume to Sewagakari

The Yakuza's Guide to Babysitting

Tooru Kirishima is 28 years old and the wakagashira of the Sakuragi Group. He's known as "The Demon of the Sakuragi Group" because he uses his position as a yakuza as an excuse to do whatever he wants. But one day, he ends up in charge of his boss's daughter?! An independent young lady and good-looking yakuza brute's heartwarming(?) comedy! (Source: Micro Magazine-sha, translated)