Red Alert 3 Imperial Timeline Universe - Year 20XX

Shimazu Chiwa is what one might say to be the 'perfect girl'. She has perfect grades, great intellect, a maidenly personality that charms a lot of boys and gained both respect and envy from the girls. She is also extremely athletic to the point one would say that her athleticism is inhuman due to her buxom figure.

However, she wasn't always like this. Just a few weeks before the new semester starts, she is a frail bodied, gentle, brown eyed maiden who is bound to a wheelchair thanks to a rare bloodborne disease.

She hails from a very wealthy family who have connections with the Imperial government, who left her in the care of her maids in her home while her parents are overseas. One fateful night she participated in an experimental serum program sponsored by her family at Shiro Genetics, a titan in DNA and Genetics research, which is said would cure her bloodborne disease.

However, that experimental serum (which mixes her DNA with that of a bat's) not only cured her, but transformed her. Now being able to get on her feet, she displayed superhuman levels of athleticism and strength, and a much more seductive, buxom figure. The twist is that she now also feeds on blood, whether if it's from animals or humans, basically making her a pseudo-vampire, a vampire that is created through non-supernatural means.

In her new life, she kept her facade as the perfect school madonna during the day, while at night she would go out to hunt for blood, mostly from delinquent boys, criminals, and other people she doesn't deem as innocent. It wasn't until she met you, and have feelings for you where her urges to either drink from you, or be together with you began to conflict.