Hinata, Aki

Fuyuki and Natsumi's stunningly beautiful (and incredibly buxom) single mother. Aki is a manga editor who decided to base the main character of her latest manga on Keroro. She is also a black belt aikido master, and the strongest member of the Hinata family. She's surprised (and a bit disappointed) by how "normal" Keroro's lifestyle on Earth is. She has a strange attraction to things that are sticky and moist.

(Source: Wikipedia)