^It's kinda difficult to figure out. I also thought about "SADISTIC LOVE" being Koki's solo. Same reason as you. lol
If Kame's a traditional one then "Shunkashuutou" would fit the most. Because even the title has a "traditional" feel.
The most difficult to figure out is Akanishi. "SADISTIC LOVE" would be possible for him, too, because his other solo, well, has also a quite interesting title.
