In the midst of a fight on the rooftop of her school, Mikami Inaba is involved in a freak accident. Desperate to save a cage of cute rabbits from falling to their demise, Mikami grabs at the first rabbit she can reach; but during the fall, a flash of magical pink light envelopes her, fusing her with the rabbit and giving her a new voluptuous appearance and loving personality! This alter-ego is named Mimika, and is now her primary form. However, Mikami is as wild and tough as ever, still lying beneath the cute exterior and waiting to regain control of her body when she or her friends are threatened!
I am basing this recommendation on a partictular article of clothing.
The kind that is the driving plot in these two titles.
If you must know... it is panties.
Basically, T&A are what these are about. if you liked one, you will probably like the other (and not because of the deep story)