I Got a Cheat Skill in Another World and Became Unrivaled in the Real World, Too, Vol. 3 (light novel) — Miku

Next level up -- become “god's” pupil!

Yuuya Tenjou has obtained all kinds of powerful skills and abilities and continues to live his new lifestyle in both the other world and his home world. In the Weald, he comes across a "divine beast" rabbit! "I'll train you. In exchange, teach me how to use [magic]." He becomes the pupil of the unrivaled rabbit, and at the same time becomes a teacher to a divine beast. Back in his world, the Ousei Academy Sports Day begins but paparazzi aiming to get full coverage of Yuuya show up! Yuuya carelessly ends things with a single hit, sending the school into an uproar.