Numbness

Level 0 (Stoic)
There is no bonus for this level since no manga has been read

Level 1 (Somber)
For this level you have 10% less sanity loss when committing murder.

Level 2 (Detached)
For this level you have a total of 20% less sanity loss when committing murder.

Level 3 (Unemotional)
For this level you have a total of 30% less sanity loss when committing murder.

Level 4 (Desensitized)
For this level you have a total of 40% less sanity loss when committing murder.

Level 5 (Dead Inside)
For this final level, you have a total of 50% less sanity loss when committing murder.