結界師 [Kekkaishi]

Published by Shogakukan from 2004 to 2011, Kekkaishi is a supernatural action series by creator 田辺イエロウ, spanning 35 issues. It follows the quiet, everyday lives of young guardians tasked with protecting their school—and their town—from the spirits and monsters that lurk in the shadows, using mystical barriers called kekkai. The series stands out for its blend of grounded, character-driven storytelling with inventive, strategic combat, earning a devoted readership during its run in Weekly Shōnen Sunday.