In Mr. Imai's memories, he had always remembered his young master Ken as the little boy who was too anxious to be friends with anyone else.
"Young master, what's wrong?"
On one of those times Mr. Imai has picked up Ken in school since his mother at that time fell sick and his father, well, he was always a busy man and barely went home, it was the first time Mr. Imai had seen Ken in his vulnerable and pitiful state outside their house.
Even in his young age, Ken had always mastered the art of hiding his weaknesses from other people to either prevent them from worrying about him or shield himself from those who want to shatter him apart.