The bebe becoming monke is heavily foreshadowed when now anti monke returner zook finds the meaning of life in baseball.
Ellen healed his flesh wound on Madagascar and then got drunk while leaving the hard work to Bucket-chan. Hisu hasn't even explicitly said why she wants to make babies (but we all know it's bc of that 10-pack amirite).
Ymir and Ereh vs. Pede Sr. and Pede Jr. is also foreskinned when Zonke teaches Umi about times tables. Hallucigenia-kun is getting the backstory he's deserved since the season 2 OP, and I've heard rumors that a Hallucigenia-kun-centric OVA will be released next Spring, and it will portray his nichijou hundreds of billions of years ago.
And when this is all over, Yams will personally ask me "did you rike it?" and I will answer "hai, I riked it." Mark this post.
Lastly,