[Soubi wants to take Ritsuka somewhere just the two of them. He's tried to remain back, to allow Ritsuka to speak to who he wishes and interact with anyone he wants...but Soubi wants him all to himself. He can't do that. Ritsuka wouldn't like it.
So instead he searches for a place where they can spend just one afternoon together. The beach seems like it would be a good choice. It seems...uncrowded at the moment. Peaceful. And he can smoke here without it hurting Ritsuka.
He continues to survey the area and thinks he's found just what he wants--