If you don't remember, you could look it up to refresh your memory before asking. I just looked at the images on dlsite and a video on chobit. There looks to be at least one character which may fit the prepubescen" body type showing virtually no signs of puberty that has lewd scenes. If that is the case, then that would be why.
Even just 1 character, with 1 scene appearing for a split second would be enough to get the game banned. No matter how long a rule is broken for, it's still broken.
I did look at the dlsite, and saw the onis' image, but considering "2D and 'unrealistic' depictions are generally looked upon more favorably" loli onis aren't even human (thus unrealistic) and the game is 2D so, this would fit both criteria, especially considering what some famous titles have and are allowed.
If you want you can always open an ticket an appeal the decision. Although, usually if a game gets out of the zone for violating the rules it rarely comes back.
'Unrealistic' doesn't mean non-human. That's why elves or "she is a 1000 year old vampire" doesn't work either.
Perhaps it's because of the definition. The Merriam-webster dictionaires defines "Unrealistic" as: not realistic : inappropriate to reality or fact. And "Realistic" as: accurately representing what is natural or real. Magic, and by extention monster girls, fit that criteria, they don't represent what is real.Why do people even think that's what's meant?
However, the term 'unrealistic depiction' is a single entity in this context.
It's not that the character has to be unrealistic, but the characters depiction has to unrealistic. Elf ears, red skin or an oni-horn alone aren't 'unrealistic depictions' otherwise any cheep cosplay would be okay as well.
