Poor writing, the story all over the place and hard to follow (I know nothing about Dragon Ball universe), badly spaced porn scenes (eg. Caulifla sex immediately after fucking A18), tons of scenes where the protagonist is talking to someone that has a sprite but all you see is background CG, sprites are one pose and expression. Most importantly, the protagonist is a drooling retard with almost no personality (he gets angry once or twice, that's it).
The art is good but it's all gimped by the bland writing and nonexistent descriptions. It's all basically a (boring) dialogue dump from start to finish.