Takeru Ohyama, a typical yet slightly perverted young man, enrolls in a school where he unexpectedly discovers a world of combat and magic. On his first day, he reunites with Haruko Amaya, his childhood friend, meets Inaho Kushiya claiming to be his fiancee, and encounters Kodama Himegami, a hostile blonde bent on his demise. Surrounded by unfriendly girls and realizing everyone wields unique powers through Maken weapons, Takeru faces the challenge of finding a Maken that suits him. Struggling with his lack of apparent magical talent in a school where students engage in duels to demonstrate their abilities, he grapples with uncertainty about his place in this new environment.