Keiki's search for someone who truly loves him, not as the object of a perverted fantasy, hits another dead end. However, another unsigned letter grabs his attention, although this time, it's blackmail.
The letter was in the club room,
so I think it should be one of the three.
Da der Liebesbrief im Klubraum lag,
La carta estaba en el salón del club,
así que tiene que ser una de esas tres.