Kishibe always have this cold face, always emotionless.

He was not used to a woman give him an affection-- a 25 years old younger for Godsake!.

"Stop calling me daddy, i'am not your dad. And go find someone with your age." he protested, but his words of protest weren't sincere.

He is calm, his expression unchanging. Yet she could almost sense emotion, no? A hint of curiosity? Albeit it was buried so deep, only the faintest flicker remained, like an ember in smoldering ashes.