A Kewshey~Chan is very similar to a Kikko~Chan. But its kewshey. A kewshey ~chan is very friendly too. (but not always >:D) Her close friends are kikko~chan and Ray~sama.
Either liquid niquil or any liquid drink with melatonin, Ashwaganda or other sleeping aids in a liquid form. If warm tea helps you get to sleep that could be sleepy juice too.
I could not sleep so I chugged some sleepy juice and now I'm so tired and sleepy.