Megami no Daikousha to Natta Shounen, Banjou no Ou to Naru

Read Manga Megami No Daikousha To Natta Shounen, Banjou No Ou To Naru / The Boy Who Became a Great Power’s Successor, Rises as the King on the Board / The boy who became the goddess’s proxy rises as the king on the board. / 女神の代行者となった少年、盤上の王となる / The Boy Who Became the Goddess’ Proxy, and Became the King of the Board / Мальчик, ставший доверенным лицом богини, становится королем на доске

Luka’s homeland is destroyed by a powerful curse, and he is left bearing the same mark. Determined to prevent anyone else from suffering as he did, he sets out to become a top-rank adventurer and uncover the truth behind the curse. On his journey, he encounters Seremise, a mysterious higher being, and chooses to become her successor—an individual entrusted with extraordinary power.
With this new role, Luka charges across a world filled with hidden schemes and grand designs, striving with his companions to rise from an afflicted boy to the one who will command the entire board.