Climb to the Top of the World Tree Maze Just for This Kind of Thing?

[Game alien world + Japanese fantasy + team adventure + hilarious + slow-burning] I skipped the college entrance examination and took the Internet cafe, but unexpectedly traveled to the game world. The originally missing sister was found in the game? In fact, it was my brother who was picked up. Keep your voice down, this is very shameful... I have full level game theory, but my body is as useless as before the time travel. Fortunately, there is a system, so let's upgrade step by step, aiming for the highest level of the maze!