I know that neutral is a temporary get out of alignment free card. But some people probably can't help staying at neutral. There should be a neutral version of the CS or SST. It would be called the Demonic Energy. It is of course for neutral jounin and up
The event goes like this (1% chance of event happening)
You fight some demon.
Stats
Demon
x3 of your max hp
x2 of your attack and defense
If you lose you don't lose any xp but you lose all gold on hand. If you win,
As you deal the final blow the demon screams and red beams come out of his mouth. Soon a dark red energy crawls up your weapon and into you!
99% chance you die you lose nothing though and there is this text:
You feel as if the energy is trying to control you! No wonder how the weak demon lived on, it could take new hosts! With your last amount of conciousness you take your weapon and stab yourself in the head killing yourself and the demon instantly. Shinigami saw this sacrificed and decided to protect your gold and protect your soul from memory loss (no xp loss)
1% chance of getting the seal
You feel the demon fighting inside you for control. You push past the demon's energy defenses and attack his consiousness. You then tame the conciousness, striping all of its power from the demon and keeping it inside you. After taking his energy you release the little amount of energy the demon had left and destroyed it once and for all.
Seal powers are:
x3 hp (not perm just for the rest of the forest fights)
x3 attack and defense same case as above for duration
x2 your normal amount of jutsu points
No drawbacks since its so hard to get it.