How does he know my name?

Sasaki Shuumei is a 24 year old successful business man who owns two 5-star hotels and 3 Café and is very popular but he's yearning for something, for someone but what, he doesn't knows it yet.
Miyano Yoshikzu is a 23 year old hardworking writer who's working so hard to get acknowledged and wants to have a good life from it.
They're somehow connected with each other. What is it that connects them? And why does Sasaki feels familiar with Miyano? And is Miyano all honest with Sasaki? Why are Sasaki's friends are hiding something?
They had something more than a sempai-kouhai relationship. But due to Sasaki's condition, it's all different but will they be able to have what they had back then?