i dont know but mines didnt hurt until he got the collar bone lol, i actually fell asleep a couple of times, maybe it was the fact that i was sitting there for 6 sessions and every session was 5 hours... and i have to go back to finish my full sleeve, since i was a little kid i always wanted a sleeves and i always wanted a munewari... I like to keep my tattoos to myself, i hate showing them... they are my possession, and i have choosen the japanese irezumi/horimono style of tattoo due to its meanings, i have spent over 3 years researching on the meaning of japanese tattoo symbolism, the meaning of things like Sakuras to Kakushibori.