Ramshackle[]
Yuu/MC[]
When interacting with the MC, Cater is playful towards them and teases them occasionally evident in some of his voice lines. He acts like a sort of mischievous older brother towards them along with the first years in his dorm. However, he isn't above tricking them to his advantage as seen in book 1 where they tricked them into doing his job of painting the roses red and throwing them out after.
Heartslabyul[]
Trey Clover[]
Cater and Trey seem to be close friends, Cater even saying he wishes he could stay with Trey's family during winter break instead of going home to his sisters.
Ace Trappola and Deuce Spade[]
Cater likes to tease them both for his amusement and in book 1, he tricked them along with the MC to do his job for him and threw them out after. Cater never misses a chance to mess with them and playfully refers to them as Adeuce combo.
Scarabia[]
Kalim Al-Asim[]
They're in the same club and are on friendly terms. They have a shared love for parties and Cater seems to consider Kalim as someone who's fun to be around.
Pomefiore[]
Vil Schoenheit[]
Cater admires Vil and looks up to him as an influencer. One time, he tried to get Vil to take a selfie with him for his Magicam account, however he failed at it as Vil didn't agree to take a picture for free.[1] Cater also tries to involve himself in activities Vil partakes in, such as auditioning for the SDC so that he can compete in the same team as Vil.
Diasomnia[]
Malleus Draconia[]
Cater acts friendly though also a bit cautious with Malleus. But he will still try to make jokes or even tease Malleus, and once he approached Malleus in hopes of taking pictures of him for Magicam.[2]
