I got a chuckle out of the middle one.

The middle one I could find somebody mention online before the episode came out, the other two don’t show up at all. So the middle one I think is from the LN, the other two might be anime original (or maybe just not funny enough to post online). I have a feeling these are just referencing LNs this time. The cover arts feel inspired as well.

• クラスの１軍女子に、赤スパ投げられてます！
• 借りた部屋にJKが付いてきたけど、食費が高くてもう限界です。
• 銀河皇帝の娘さんは、丁寧な暮らしを望んでいる。