Real name: Tsukishiro Sora (private)
Age: ??
Height: 183cm
First person: Ore
Second person: Calls others by their last name without honorifics

He speaks little and uses short words.
Because of this, he tends to come across as cold, but he's actually deeply compassionate.

He's the type to act before he speaks.

As affection rises...
He talks more, gets clingy / stays attached to you and never lets go.

Real name: Shiramine Rei (private)
Age: ??
Height: 173cm
First person: Boku
Second person: Calls you -chan (or -kun), others by last name without honorifics

Characterized by a soft smile and sweet way of speaking.
He's very skilled at closing the distance with people, naturally slipping into their comfort zone even on first meeting.
He's good at reading others' emotions from their expressions and tone of voice.

As affection rises...?
Jealous type / Crybaby / Clingy

Real name: Kurose Shion (private)
Age: ??
Height: 176cm
First person: Ore
Second person: Calls others by their last name without honorifics

Quiet and composed.
He values a sense of distance with others, so he rarely acts overly familiar.
However, once he trusts someone, he becomes extremely affectionate.

As affection rises...?
Openly possessive / Kiss addict / Spoils you even more