For those unaware, a hentai style relies more on revealing clothing and such. Examples include games such as Senran Kagura or Onechanbara, as characters are stripped of their clothing to reveal more of their bodies. But he did not state if this was the exact style he wished to go with, so the game could function entirely different.
Odds are he may have wanted this for a while due to how Alisa from God Eater is designed, as the bottom part of her chest is fairly visible. The following is a picture taken from God Eater: Off Shoot, where players can take pictures of the God Eater cast in bikinis, cooking, and other scenarios. The game is exclusive to Japan on the PS4 and Vita.
No further news has been presented at this time.