Series by 吉岡公威

In a world where magic, known as "Material Puzzle," governs the fabric of existence, a legendary tale unfolds in the ancient kingdom of Zero Kreuz. Belzi Task, a young and ambitious magician, seeks to unravel the mysteries of this powerful magic, guided by the enigmatic Fedradrai, a sage with secrets of his own. As they journey through a land filled with mystical creatures and hidden dangers, Belzi confronts the weight of his ambitions and the true cost of wielding such power.

Iori Kitahara, a studious high school graduate, leaves his quiet life behind for the sunny beaches of Izu, hoping for a peaceful summer at his uncle's diving shop. But his laid-back plans are quickly capsized by the arrival of Kohei Imamura, a wild and carefree diving enthusiast who introduces Iori to the chaotic, hilarious, and sometimes dangerous world of scuba diving. What starts as an attempt to relax turns into a series of misadventures, from mastering diving equipment to encountering the bizarre underwater fauna. Through it all, Iori learns the joys of friendship, the beauty of the ocean, and the unexpected lessons life throws your way when you least expect it.