|Chapter 23 - Grey Man|
Kyousuke is first seen smoking when he comes home. He normally puts on a tired look. Although putting on a serious face, only for a joke and a big chesty laugh to follow. At first noted by Miyamura to look like Souta, saying that "Souta became huge".
According to Hori, Kyousuke is rude, selfish and forceful. He jokes around on serious topics and has a knack to leave for long periods of time. He is also cheap, as when he was asked by his family to eat Beluga Caviar or Sharks's Fin Soup, he flatly denied them. He seems to be able to shift betweeen moods quickly, as when he was sleeping before being visited by Miyamura, at the sight of him Kyousuke's tired demeanour changed to a happy one instantly.
Despite being Hori's father, she acts cold towards him. Hori doesn't mind physically hurting her father and performs an axe kick on him, when Kyosuke tried to act cool in front of Miyamura. Later on, when Kyosuke asks Hori to prepare him some food, she comes back with a bowl of soup and purposely jams it into the back of his head. He then apologized to Miyamura for Hori's "crazy domestic violence habits".
Souta is Kysokue's son. Although their relationship isn't shown much in the manga, Souta and Kyosuke have a good relationship. They both seem to have similar personalities, both are chipper and love when Miyamura comes over. They also tend to agree on what they want to eat. Kyosuke's relationship with his son is much healthier than his relationship with Hori.
When Kysokue first met Miyamura, he intimidated him, but soon become fond of him. Kyosuke finds Miyamura interesting and accepts him into the family quickly. He sees Miyamura as his future son-in-law, and trusts that he'll take good care of Hori. Kyosuke tends to ask him random questions which usually pertain to Hori.