I don't understand this picture at all. The girl with Sachiko is Mio from So-nanda, and the poorly-drawn girl is Suzuka from the same. But Marimite and So-nanda aren't related by seiyuu or anything. So I think I'm missing the joke here...
Wait a minute, why am I the only one... hey! Wait up!What? But.. I have to go look for the Eureka Stone..Is that so!Lets go together, shall we?Don't worry. If it's lilies, there's a lot over there.
Lily is "yuri", Eureka is "yuri-ka", so..