Traveling Through Another World? but I Became a Summoned Beast

[A new author, his writing skills are a little green in the early stage, but he will improve later on] Song Yi, a young man in the 21st century, was accidentally contracted by Su Luo, a girl from another world. As a human summoned beast, he faces multiple tests: school level testing, outdoor trials, the Twilight Cult... At the same time, strange phenomena appeared one after another, and gradually involved the nature of the world. More and more problems are waiting for Song Yi to solve, but before that— My summoning master, don't come up!