Bokutachi Futari ga Koisuru Riyuu

From Nakama: Every day, high-school student Hanamura Naoyoshi is challenged in his part-time job as a helper for the aged. But one day - suddenly - a request comes from Sadamitsu Norihiko, an heir to a large enterprise, for a helper for someone recovering from sickness. From the first day, a bewildered Naoyoshi swears obedience, but their attraction is immediate, and the two share a kiss. But, suddenly, communication comes to a halt and they're no longer able to meet, and when they do meet again, Norihiko has completely changed into another person. A heart-trembling, sensitive love story!