The system has the ability to copy all bloodlines, ninjutsu, genjutsu, Kekkei genkai, etc. as long as the enemy is considered defeated. It's like a loot drop when you kill someone in fortnite for example
How to know if the enemy is defeated?
1. By killing them
2. By imobilizing them
3. When the enemy admits defeat
4. When the enemy fleas
The system has an inventory, where he can store non-living objects.
It gives you daily missions. And as for rewards, you can upgrade your system or skills, etc.
The system enables you to view your status.
When the system upgrades, you can gain System Points (SP), to improve your skills (ninjutsu, kenjutsu, fuinjutsu, etc.)
If I think of anything else about the systems functions, I will ne-new the page