Looking for a very early novel, the male protagonist traveled to another world, and then the female protagonist saw his butt. The male protagonist opens an academy that only recruits girls.

Hejie Zongheng

Author: Chidori Wings

Introduction:

In the hollow, a huge floating city surrounded by holy light Slowly falling down, the lightning danced even harder, attacking the sky and the earth. The floating city appeared from the void, and the holy light slowly faded. The lightning also slowly withdrew. Boom, a wave of air spread in all directions with the floating city as the center. White clouds slowly condensed in the sky. The white clouds became bigger and bigger. Slowly, white clouds formed one after another. One piece formed a cloud whirlpool, surrounding the floating city.