Issei Kai (一生カイ) was a male French Virtual YouTuber. He is fluent in French, Japanese, and English, and often alternating between the languages during live streams.

Kai was a normal French Otaku before getting involved in an out of control summoning magic that caused him to become an amnesiac and transported to an isekai. In this fantasy-like new world the only thing that this Virtual Adventurer would never forget is to stay positive and cheerful through all of his adventures.