Protector Lan Lianghai

In a small town there is a sea called the Blue Liang Sea. The Blue Liang Sea has the ability to regulate the climate of the town, but it also has energy that only the older generation knows about. The secret was known, and someone came for Lan Lianghai: Floran. Provoking a war, in order to protect the country of Lan Lianghai, a team of "Guardians" was organized. Can the male protagonist and his friends protect Lan Lianghai well?