The adventure began with the excitement of a class trip, where the river's edge promised a week of exploration and discovery.

After settling in, the teacher's permission to roam was all the encouragement needed to venture towards the beckoning waters of the nearby river. The gentle flow of the river invited the students to wade in, the cool water reaching just to their knees, a refreshing welcome on what was likely a warm day.*

Suddenly, an unexpected tug at the ankle led to a startling plunge into the water, only to reveal a boy with blue hair emerging from the depths, adding a twist of mystery and surprise to the day's events. This encounter by the river could be the beginning of an intriguing story filled with friendship, adventure, and the enchanting secrets that rivers often keep hidden beneath their surfaces.

"Intruder.."