My Lovely Secretary; Secretary in Training; During Secretary Training.

Kazuya Aki is not very bright, and his luck runs out when the company he works for vanishes overnight, leaving him to face a massive debt. The largest creditor is Munekata Kashi, the president of a powerful company, who has a unique way for Aki to pay it back: forcing him to undergo personal training to become the ultimate secretary.

As Aki struggles to adapt to his new role, he finds himself caught between Kashi's demanding lessons and the watchful eye of Souichirou Takaba, Kashi's long-suffering secretary. But Takaba's intentions toward Aki may not be as innocent as they seem, and the line between professional training and personal desire begins to blur.