Uchikirare Mangaka to Doujin Onna

An unsuccessful mangaka, RObou-sensei, finally has his series axed… Dejected, he opens social media and discovers an account that is absolutely obsessed with his work! When he learns they plan to sell doujinshi based on his series at a convention, he heads there, hoping to meet at least one person who genuinely likes what he draws, but then...!?