Lady!? Steady,GO!!

I, Kei Shizume, have a childhood friend who is one year older than me. He, whom I call Senpai, is very talented. He is so good that I can say there is nothing he can't do. He has the best physical ability, the best intelligence, and the best looks. He has been educated in a special environment since his childhood to become the next head of the giant conglomerate "SANADA". Unfortunately, he has no common sense at all! The curtain now rises on a full-fledged competition between Rinnosuke Sanada, a.k.a. Sempai, and myself, who work hard every day as his trainer, to become the next successor of the "SANADA" family! (machine translated - from cdjapan.co)