The protagonist, a 27-year-old man who was a technical school student in his original timeline (2000s) majoring in driving and vehicle repair. After waking up from a nap on a train, he found himself transported to 1961 where his school had become an army unit. He retired from the army and received discharge papers, pension, and recommendation letter. He is 178cm tall, considered average-looking with past acne issues. He possesses a mysterious sign-in system that appeared in his mind at midnight on the train, providing modern items like instant noodles, mineral water, and snacks. He is an only child in his previous life but gains siblings in this era.
