I... I don't understand anything...

Could it be that you can only hold up to 100 evolution materials? It seems like it will take a while to reach the stage where I can get the next evolution materials, so I was wondering which other pets to raise in the meantime. I thought I'd just collect them through idle rewards, but for the past few days, evolution materials haven't been included in the rewards at all. Only one type, which I used the day before and became less than 100, was included in today's rewards, so I was wondering if that's the case. My writing is terrible!! Also, it seems like anything over 100 gets discarded, so it might be better to raise one of them to always keep some space open. And as expected, legendary pets consume an absurd amount of materials, so in the end, it'll probably be easier-to-raise rare or epic pets, but... I want to raise both AoE and single-target attackers, but if I prioritize my favorite pets, it gets complicated. I'm becoming greedy. I figured it might work out if I equip items, so I'm slowly raising items too, but I seriously don't have enough void matter.