The first couple of panels strongly resembles the end of the first episode of Mermaid Melody... A character named "Kaito" on the ground of the beach waking up, and a girl with twintails, tears in her eyes, and hands on the ground saying his name, happy to see him awake.
Hmmm.. I remember faintly seeing something but I just can't figure it out..We were in the water together until a massive wave blew you up against a rock! You don't remember..?What just happened? My head hurts like hell..Kaito!!It was the wave...! Wasn't it?