Battle-tested project leader at a PR firm and slippery bachelor, Sakuma sees himself as a player. His smug self-regard doesn't seem entirely unfounded, both in love and at work. When is idea for a mini-theme park is dismissed as too costly and vacuous at the last minute by a major client he seems to have met his match.

Katsuragi, an heir and executive at the global car maker, Nissei Auto, is back from a marketing stint in the US with an authentic...