Toudou Shin's crushes are always love at first sight. He has been tasked with the training of new employee Arisako Ritsu, Arisako Company president's grandson. Toudou confesses his feelings to Arisako with all the confidence the noble son of the Toudou Group can muster, but is rejected. He must carefully navigate his sempai-kouhai relationship while still trying to convey his love, but how will things change when his old flame becomes a project partner and asks if they can rekindle their love?