Ryoga had to go and by go he meant go pee! He had to pee really, really; really bad… there was nowhere to pee… Ryoga saw a plant in Kaito's house… and he peed in it, Kaito got angry and kicked Ryoga out for peeing on his planet, Kaito slammed the door.
Ryoga still had to pee for some reason; he would have to venture else where to pee…