Back out and walking through the town, now even more deserted by night. Most places seemed to be shut, so I kept walking until, nearing Shiroyama Park 城山公園 again, I located a burger place called Center4 Hamburgers tucked away beyond a dark corridor that gave the impression that it was definitely not open to the public. But it was, and the friendly owner-chef served up one the most satisfying hamburgers I've ever eaten.
It was a cosy joint, covered in signs and warmly lit, with only a couple of other customers in a tiny courtyard formed by the surrounding buildings at the front. 10/10 would go back to this place.
After filling up I took a stroll around the town, through the pitch black old streets, then sending long shadows down more empty lanes. Vending machines softly humming. At the station, thirsty again, I stopped by another bank of them to try a different drink: Minute Maid Hot Lemonade. Highly recommended for cold night walks!
At the hotel, thoroughly worn out, I should have tried the onsen 温泉. I know better now, but at the time the only thing I could think of was sleep.