Destiny Unchain Online: Kyuuketsuki Shoujo to Natte, Yagate "Aka no Maou" to Yobareru You ni Narimashita

In a near-future where full-dive Virtual Reality is widely used, Mitsuki Kou is recruited by his father, the creator of the VRMMORPG *Destiny Unchain Online*, to test a new human interface device on the game's launch day. Instead of logging in normally, Kou is transformed into a vampire girl and stranded in the game with no way to log out. A system error causes him to spawn in a remote forest, though his father assures him there is no immediate risk. Kou decides to adapt, training his abilities and forming a guild. He gains popularity by streaming as a "Wizened Loli" character, eventually becoming known as the "Scarlet Demon Lord," Crim-Luersheia. Concerns arise over the long-term effects of his extended time in the game on his real-world body.