Fudou-san no Uraaka Katsudou

Fudou Keiichi (42 years old, office worker, single) leads an unremarkable daily life—except for one thing that brings him joy. His secret passion is running an anonymous account on the up-and-coming social media platform "KLART"! However, before he realizes it, his beloved secret account is caught in a massive scandal—all because of an insanely popular high school boy influencer!? An unprecedented, extraordinary friendship is about to be born!

(Source: Kodansha, translated)