Sakurai-san looks like a yankee, but gives people he passes one point advice.
Those who meet him for the first time are often scared by his frightening appearance but through the advice, they learn of how kind hearted he can be. Slowly, Sakurai's circle of people begin to grow.

(Source: Square Enix, translated)

Note: Toorigakari ni One Point Advice shiteiku Type no Yankee is as a web comic released on the author's Twitter account on June 9, 2018. Official serialization began in Gangan pixiv on February 16, 2019.