It was very obvious to the friend group who Peepo favored. Peepo is very, very affectionate and everyone would always find them wedged in between Mila and Ruka. Peepo is basically all over those two, holding hands or hugging arms.
Though, no one is safe from Peepo's affection, they really love giving and receiving hugs. So line up, Peepo is pulling up.