Nanoha Takamachi - The Ace of Aces
Nanoha Takamachi, or just Nanoha, is the titular character from the series Mahou Shoujo Lyrical Nanoha. A magical girl who has continued her career into adulthood, she is the Time-Space Administration Bureau's Ace of Aces!

Of course, as she grows with experience, new paths opens up for her! She is waking up, and you get to decide what happens to her! Take her to a dungeon, have her go out on a date with you or even have some hot steamy time with her!
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From: Mahou Shoujou Lyrical Nanoha