Being a single parent is hard.
Being a single parent of triplets is pretty hard.
Being a single parent of triplets shortly after a global pandemic is very pretty hardy.

But do you know what is much, much, much harder?
Enduring boredom! It is almost impossible to survive!
All the games have been played!
All the cool books have been read!
All the cartoons have been watched!
Everything has been done and undone, turned and turned over!

What will Kazuki, Kazumi and Kazuko, the amazing and mischievous triplets, do to continue existing in such a boring world?!