>>96856541
OVA is really good generic system.

Open Versatile Anime

OVA is great. Characters are made of abilities, and rank of ability determines number of D6 rolled (baseline is 2D6). Highest result counts, duplicate results are added to each other and count as the highest result. Characters also have weaknesses that remove dice (in case of negative dice player has to pick the worst result), and balance of abilities and weaknesses depends on power level of the setting and kind of game GM wants to run. There is also an optional system for building attacks.
It is an universal system, but does have most prepared material for science fantasy game. Works just fine without any anime themes too, even if some of abilities and weaknesses are based on anime tropes.

>>95814436
OVA