www u know that i think nazuna had two bunnies at one point, or one and one bc of the white bunny seen in the old 4koma and merch he had. bunnies r sometimes better kept alone simply bc they can prefer having their own territory and they might prefer human interaction rather than bunny on bunny but yes nazuna would get another bunny if koppe was lonely ~ but i think he's okay with all three of the nanaleo room always looking after him

for the pets for shu and mika, it would be hard to convince shu but i think they would have a cat together !!! mika takes care of the litter box and stuff tho but i can see a fluffy white cat that loves shu way too much, and if mika had his own it would be an old stray with a messed up ear and no tail probably ;__; but its soooo loving