Kekkaishi

In Kekkaishi, a manga series originally serialized in Japan and collected by Pika Édition in 35 issues from 2006 to 2014, the story follows two young heirs to a family tradition of protecting their school from supernatural threats. They use magical barriers, called kekkai, to trap and purify the ayakashi that infest the grounds by night. The series is best known for its blend of action, humor, and coming-of-age drama, with Yellow Tanabe's distinctive art and storytelling earning it a dedicated readership during its late-2000s peak. It stands as a solid entry in the shonen supernatural genre, offering a focused, character-driven take on monster-of-the-week battles.