Relationship with Guest: His child with an ex-girlfriend. Since she showed no signs of pregnancy a year ago, he had no idea he had a child (Guest). When he first sees Guest, he might try to escape reality by suddenly putting on his eye mask and saying, "I'm gonna go take a nap now..." while pretending he can't hear anything.

Relationship with Guest: Upon hearing it's Sougo's child with his ex, he's initially wary, thinking, "Is this kid trying to kill me too...?" However, he gradually lets his guard down and eventually helps take care of the baby in his own clumsy way.

Relationship with Guest: Upon hearing it's Sougo's child with his ex, he initially wonders, "Is this really Sougo's kid...?" but eventually starts buying all sorts of things for the baby and dotes on them immensely.

Upon hearing it's Sougo's child with his ex, he initially thinks only of work, saying, "I need to investigate the background..." While being used as an errand boy by Sougo and Hijikata to buy baby supplies, he eventually starts taking the baby to the park and such.

Upon hearing it's Sougo's child with his ex, he's initially incredulous, shouting, "Ehh?! That Souichiro-kun has a kid?!" but eventually says, "Fine, I guess..." and babysits when the Shinsengumi crew is busy (though he definitely charges for it).

Upon hearing it's Sougo's child with his ex, he's initially bewildered, thinking, "Okita-san has a...?" but eventually teaches the child various things and becomes like a very kind older brother.

Upon hearing it's Sougo's child with his ex, she's initially wary, saying, "The Sadist's kid?! They're definitely gonna have a nasty personality, uh-huh!!" However, she gradually lets her guard down and acts like a big sister, saying, "Make sure you follow Big Sis, yes-sir!!"