[RJ151271] The Reason I Became Her Pet: A Mazo Situation (僕が彼女のペットになった理由)

When freshman Mitsuru Terashima is involved in a minor traffic accident,
he learns more in the care of nurse Sayuri and her perky assistant Serina
thank he could ever expect to get out of Tokyo University.

Are they just a couple of flirty hospital staff, or do they have some greater goal?