This Magical World Is So Much Fun

[Western fantasy + multiple races + sword-and-magic academy, lighthearted comedy + ensemble cast + daily life] After school in his first year of high school, Jiang Yin crashes headfirst into a strange portal and opens his eyes in another world full of dragons, magic, and goblins.

Even more absurdly, his poker-faced class monitor, balding homeroom teacher, and the lady who sells vegetables all get transported there too. Before long, one becomes a sword-fighting prodigy, another starts a dragon-delivery service, and the last opens taverns all over the continent.

Using a viral song to drive off wild boars, conquering dwarves with square dancing, chatting with evil dragons... These modern people who refuse to play by the rules somehow turn a continent of swords and magic into a bustling marketplace...