Junya Hisayoshi is an entrepreneur with many certifications.
By order of his dad, who runs a personnel management company, he must cover himself up with one of his client's rival companies.
His target is the current president, Zen Asahina who is devilishly handsome and a former model, so there are many rumors about his negotiating methods.

Based on the information that Zen once dated a boy, Junya tries to seduce him while they are in the office but is rejected and suffers enormous humiliation.

However, later he manages to find out Zen's secret...