Platonic(1991)

Platonic - Yagi & Terayama

Icy cool salaryman Terayama focuses on the work before him and remembers little. But for Yagi, Olympic long-distance runner and Japan's "Star of Barcelona," Terayama isn't just an upperclassman; he's the man Yagi's been running after for all these years! Now that they're in the same company, can Yagi finally make his way into Terayama's memories...and heart?

(Source: Manga Planet)