A lonely man starts a 40-before-40 list—then a secret from his coworker changes everything.

A takoyaki party brings Suzume and Keiji closer—until hidden feelings bubble to the surface.

Tojo juggles work chaos to make a weekend date happen, and a day at the aquarium shifts the tide in his relationship with Keiji.

Keiji gives Tojo a thoughtful makeover, and while doubts linger, love quietly begins to bloom beneath Tojo’s hesitation.

Tojo and Keiji go clothes shopping together, and Tojo tries on many different styles. The two chat about their past work life and find that Keiji has been paying attention to Tojo for a long time.

Tojo and Keiji play sports together during the day and eat cake at Tojo’s at night, and the atmosphere subtly heats up. Keiji takes the initiative in showing how he feels, with a more intimate gesture.

Tojo and Keiji shop together at a furniture store, and the vibe between them develops further. Although shy, Tojo is moved by their daily interactions, and wonders if he can take on the responsibility of loving someone. Keiji’s actions seem to have a clear direction.

At a work party, Tojo and Keiji need to maintain their distance. Soon after, Tojo falls ill and Keiji takes care of him. Their relationship deepens, with only 4 things left on the list to do…

While out on a date, they unexpectedly run into a colleague, whose presence forced the two of them to deny the relationship and to claim it would be impossible. After they return home, a rift starts to form between the pair…

Kuroki invites Suzume to a barbecue he holds weekly for his family.

Tojo decides to spend the weekend alone, but memories and feelings for Keiji keep resurfacing. Meanwhile, Keiji discusses his feelings for Tojo with his friends.

Tojo builds up the courage to make a confession to Keiji; will he finally cross the last item off his list, to not be alone before the age of 40?