daisy.b.wさんのイラストまとめ

Momohito's casual wear already appeared in FLASH LIGHT event episodes.
Shu's one is the same as his cameo in Kyosuke SSR2.
And Eishin inner shirt is the same as the one in his Christmas SSR.
Momohito inner shirt is also shown in Diago SSR3.

The very first image / character that I associated with Eishin's ponytail look is Nakashima Youko from the 12 Kingdoms.
Apart from red hair as and green eyes, they has the same King aura.