A collaboration project between Azarashi Soft and Lump of Sugar to commemorate the former's 10th anniversary. In every class, there is at least one so-called "Mob Character," and this time, it is our protagonist, Hagakure Yuzuru. Although he does not stand out in the real world, while hiding his true identity in the Online World, he has gained popularity as the virtual Performer, "Yuzuriha Gakuto." Everyday, he spends his life as a mob character, but on the Internet, a popular person, however..... One day, because he lets his guard down a little, a famous classmate at his school, Kiraboshi Runa, learns of his identity as Yuzuriha Gakuto. Thinking that he will be taken advantage of from now on, such as giving her money to keep his secret, Yuzuru falls into despair. But―― "I beg you!, please let me be your apprentice!" ――Runa's request, from what he had expected, is completely different.