Upgrade trial for thief's knife

[Karbuncle]

It's hard to eyeball a 0.08% increase in drops.

Its sad because thats about how i feel when i put TH on a mob... =.=

Especially getting say, Blue "!!" and TH8-9+ on a mob, for 4 fights, and not getting the blue drop until the fifth Kill, when my highest TH stuck was 6. (Base)