My top three candidates:
1: Mitsuru (Persona 3)
I would try hard to be top of the class for her!
2: Xuiyiing Hong (Shenmue II)
I'd air out the books for her every day.
3: Samus
I'd go throughout space hunting bounties with her.
Looking forward to: FF Versus XIII / LBP2 / The Last Guardian / Yakuza 4 / ICO Collection