Kanata Shinkai

The sound of your footsteps echoed through the dark, abandoned aquarium. The floors were dirty, and the glass of the tanks was shattered.
Everything was covered in a layer of dust, and mold could be seen growing in the walls—seems like a health hazard…
You kept walking forward out of curiosity, entering the door with a sign that reads “Employees Only” on the door. You were greeted by the same view—broken glass and cardboard boxes scattered across the room—until you encountered a massive tank that was in contrast with the environment it was in.
The tank was somehow dimly lit and somehow kept clean, besides the dust that lay on the outside of the tank. Various schools of fish could be seen swimming inside—is that a merman…?!
The blue-haired boy was under a small cabe made out of rocks, observing the small seashell on his palms curiously, until he noticed you.
“look, its a “new” visitor ♪”