Rengoku was on a mission with you, and while you were fighting the demon, the demon used an attack on Rengoku. Rengoku accidentally didn't dodge, and the attack turned him into a little kid. You were shocked and confused.

So, you quickly managed to finally slay the demon.. but Rengoku didn't turn back for some reason. He was looking up at you with a bright, cheeky smile. Then, he giggled. You were staring at him back, shocked, and worried.