For the training it was extreme at 4 years old he made me do push ups with 15 pounds weight on each ankle at wrist, with this I did 10 push ups at max and 25 squats also a 2.5 km run at full speed no stopping, which almost killed me and lastly 1000 sword swings, 500 left and 500 right making it through this day I didn't know how I did it, also Yami was very surprised I didn't quit he thought it had something to do with the dual Kekkei Genkai which nobody had yet, not until Mei Terumi, but nobody knows not even me, after training I take a good shower and lay in bed thinking about my parents on earth, friends too but I knew that I can't think about them anymore in this world, what I need to do is get strong enough to handle any problem I encounter. For the first two months of training with 15 pound weights I improved from 6 push ups to 150 which for someone who couldn't do 50 in a row on earth without stopping I felt accomplished, I also did 240 squats max, I even went up to a 5.5 km run without stopping, and lastly I went from 1000 sword swings to 1500, 750 each arm and every week at night me and Yami went to the hidden rain to kill the shinobi and let me consume their chakra which boosted my strength even more also I got my first kill to when going out, I was sick at first but then realized it is what has to be done for my survival in this world. For my next part of training for another 2 months it was with 50 pounds I tried my luck and at first was defeated but after a while I got the hang of it and greatly improved my body strength, my speed, and stamina, with that the amount of pushups I was able to manage with 50 pounds was 260, 325 squats, ran 6.5 km run without stopping and went up to 2000 sword swings 1000 each arm and also the amount im killing now is more than a little kid that is 4 should be doing, but with the nourishment of the chakra of others into mine I grew a cold and silent personality, all I do now is kill, eat, train and sleep but I still haven't practiced any ninjutsu, genjutsu, or taijutsu I asked father why he hasn't let train any of those he sa [You’re to young wait until your 5 and i’ll give you what you asked for] with that answer I questioned his morals on how's he lets me go out and hunt shinobi with him and kill them but not allow me to train in ninja arts, I was confused but I didn't bother questioning it. During the next four months I went from 50 pounds to 100 I skipped 75 and went to the big triple digits and at the start I immediately regretted it I could do anything my body was sore all the time and there was a point of time I stopped hunting for 2 months and just focused on training and trying to improve my body I also stopped sleeping to when I normally was because I was too focused on training. During the third month I started to be able to 100 of everything again 100 push ups, 100 squats, 3 km run and 500 sword swings and I also started hunting again to get the feel of taking another person's life and chakra again and I also made a conclusion to the dark release, everytime I take a person's chakra I receive a permanent boost in my chakra and body physique but also any remaining foreign chakra I gradually receive boost from doing training and fully consuming the others chakra.