Barber Number2
using lifespan for the technique isn't a side-effect. The only way to fix it would be to use a lot of resources but don't know how it actually will be
Too much "plot armor"... It sucks to see something with potential, reduced to pure dross by the author's laziness...
Pre OP technique with his cheat huh
He's 22, life expectancy is 150, he would spend 60 years. He would still have 68 years left. And it's hard to say if he wouldn't advance and gain more lifespan before that time. For such an op technique I would expect a much higher expense.
it would be nice if the system gave him a vampire type bloodline it would be more convenient than being human
Nice and if he have a technique that just like in avatar the blood bending other being or having devouring ability. Yep Truly good for Demonic path.