4話の流子ちゃんパジャマはマコのお下がりなんだろうなーと思うとマコはあのぱっつんぱっつんのギリギリまで着てたんだろうなあとか思いまして

I was thinking about how the pajamas Ryuuko-chan wears in episode 4 are Mako's hand-me-downs, which got me thinking about her wearing it until she couldn't anymore.