Topic: Hayashi produced a song for idol band "Yurumerumo!"
No doubt he was involved. :-D
Official Music Video Hamidasumo! by Yuruyurumo!
Yurumerumo! brings a single featuring a song produced by Hayashi (POLYSICS). Also includes a song for POLYSICS and a remix by Tamaya 2060% (Wienners). A cover of this edition features a member, Mone.