The Perfect Trap-Girl Training System in an Anime Crossover

A story about a System that screws its owner over by shrinking his little brother to the size of a toothpick, then helps restore it and make it even more impressive!

The System keeps screwing him over the whole time, but the end result is still satisfactory!

This novel and its characters are entirely fictional. Any resemblance to actual people or events is purely coincidental. Do not imitate.