Seibu Lions' first-round draft pick, infielder (18) from Hachioji, moved into the Wakashishi dormitory in Tokorozawa, Saitama on the 7th.

The team also includes pitcher Shinnosuke Hada, a senior from Hachioji. "I'd like to talk about my memories of the Hachioji dormitory," he said, looking forward to meeting him.

At his high school cultural festival, Arai attempted to perform a piano rendition of RADWIMPS' "Shokai," and beamed, "I had a great time in high school. baseball was the majority of it, but the cultural festival and sports day are fond memories." However, when asked about his enthusiasm for the rookie joint voluntary training starting on the 10th and the opening game beyond that, his expression changed and he stated his determination, looking straight ahead, saying, "I want to play with my legs and shoulders. First of all, I want to work hard to become a regular player."