Comprehensive Manga: Encountering Demons Beginning from Juwang Academy

Traveling to the world of the devil's high school, Luo Hao awakened the sign-in system, as long as he signs in, he can get the corresponding rewards.
【Ding!Congratulations to the host for signing into Juwang Academy, reward: Encountering Demon Drive]
【Ding!Congratulations to the host for signing in Scene 1, reward: Sekiryuutei's cage hand]
【Ding!Congratulations to the host for signing into the underworld, reward: Treasure of the King]
.......
Rias: I really want him to be my man, no, my subordinate.
Akeno Himejima: Student Luo Hao is really a strong man.
Tacheng Kitty: I will not lose to you!
Valli: Luo Hao, an opponent who will never be defeated...