Chakra Tags (Mind)

After Kiseki ran away from the village, he came across Kabuto. Kabuto was still in the middle of turning into Orchimaru. He followed him until he disappeared. He them found him again and confronted him at the entrance of his lair. Kabuto welcomed him to the lair, and accepted him as a student. He taught Kiseki how to use fuinijutsu, dojutsu, and kekkei genkai ninjutsu that were foreign to him. He also taught him jutsu whose power is beyond life and death as the Reanimation and so on. And last, but not least, he did daily experiments on live humans to produce chakra to a near infinite amount. Kiseki failed many times, but at the end, he was able to do it on one person. He later on replicated it again and again and sealed them in tags. He created nearly 2000 of these tags in under a month. He later on puts them into his clothing and hides it around his body. Furthermore, he even embedded it to his own skin. He tests one tag out and immediately gets addicted to the feeling. He releases it by opening it up with a hand sign.