What is the plot?

Goro Inogashira goes into the New Year's Eve special planning to spend the holiday away from ordinary work routines, but he ends up taking on an unexpected job after a mishap redirects his plans and he is asked to deliver a film reel for a theater-related errand. What starts as a simple delivery quickly turns into a long, tiring journey, and he drives on toward his destination while trying to keep his schedule under control.

Along the way, the trip takes more turns than expected, and Goro is forced to keep going farther than planned instead of completing the task quickly. The extra travel leaves him hungry, and he stops to eat, with the meal functioning as one of the special's central beats as he regains energy before continuing on.

The reel he is carrying turns out to have more meaning than it first appears to have, and the story behind it gradually comes into focus as Goro continues the delivery. The special frames this revelation as part of the emotional core of the journey, tying the errand to a heartfelt human story rather than treating it as a simple courier task.

By the end of the trip, Goro reaches the point where the delivery's purpose is fully connected to the people involved, and the special closes on that warmer emotional note rather than on the logistics of the job itself.

What is the ending?

Goro finishes the long New Year's Eve errand, and the film reel's hidden story is finally understood. The ending closes on a warm, quiet note, with Goro having completed the delivery and received the heartfelt message tied to the reel.

Goro is first shown on the road with the reel he has been asked to deliver. What begins as a simple year-end task becomes a longer trip with unexpected detours, and he keeps moving from place to place while stopping to eat along the way. As he travels, the mystery around the reel gradually opens up, and by the end of the story the "unexpected story" inside it is revealed.

In the final stretch, the delivery reaches its end point, and the emotional weight of the reel becomes clear. The story does not end with a dramatic conflict or a physical showdown; instead, it ends with Goro completing the task, understanding the message connected to the reel, and carrying that feeling with him as the New Year arrives. Goro's fate is straightforward: he finishes his journey, delivers what he was entrusted with, and remains the same lone traveler at heart, but with the year's work closed out.

The other main participants in the ending are the people tied to the reel's story and the delivery itself. The theater-side figures and the people connected to the reel are not described in the available material with full scene-by-scene detail, but the sources make clear that the reel's hidden meaning and "heartfelt message" are the final point of the special. Their fate, in practical terms, is that their message is successfully carried to its destination through Goro's delivery.

Is there a post-credit scene?

Yes. The episode has a post-credit extra, which is a short real-life restaurant segment featuring the series' author, Masayuki Kusumi, visiting the restaurant used in the episode, ordering food and drink, and giving a brief, cheerful taste review while drinking his favorite alcohol.

I can't confirm from the available results whether the 2023 New Year's Eve Special's post-credit segment is identical in format to the regular episode extras, but the series is known for ending episodes with that kind of unscripted restaurant visit by Kusumi.

Is this family friendly?

Yes--Solitary Gourmet: 2023 New Year's Eve Special appears generally family friendly and is likely suitable for most older children, with mild content overall.

Potentially objectionable or upsetting aspects to be aware of: - No strong violence, gore, or horror is indicated by the available descriptions; the series is primarily about a man visiting eateries and eating alone. - Mild adult themes may appear because the main character is an adult businessman on work-related travel, with some workplace or travel-related stress implied rather than shown explicitly. - Food-focused scenes may be intense for very sensitive viewers only in the sense that they are centered on eating, hunger, and rich dishes; this is a core feature of the show rather than a disturbing element. - The special involves a mysterious film reel and unexpected detours, which suggests some light intrigue, but there is no indication of frightening or upsetting content in the descriptions provided. - If a child is very sensitive to loneliness, quiet adult drama, or extended restaurant scenes, the pacing may feel dull or emotionally subdued rather than upsetting.

If you want, I can also give a parent-style age recommendation such as "safe for all ages," "best for 8+," or "teens and up," based on the tone of the series.