Seven Days to Die, No, the Entire Computer

(A heads-up: this book has a slow pace, and after the first world, the protagonist is basically invincible in the 7 Days to Die world. So most of the worlds afterward will be more like vacations.)

My transmigration journey is all fun and games, with no pressure.

I transmigrate to make up for regrets or do things that make me feel good. Getting stronger won't be a long-term goal.

First world: Cardcaptor Sakura