Yuki Hoshikawa (星川 ユキ, Hoshikawa Yuki) was a student in Yomiyama North Middle School's 9th Grade Class 3 in 1983.

Yuki had shoulder-length brown hair and brown eyes.

She was only seen wearing the 1983 female school uniform.

In Episode 9, Katsumi Matsunaga explains on the tape he left in the old classroom what had happened during the class trip in 1983. After praying at the shrine, Class 3-3's teacher, Mr. Koga, declared everything would be okay and the class was free of the curse, much to the relief of Yuki and her classmates. As they were descending the mountain, it started raining.

When Jun Hamaguchi was struck by lightning, the class began to panic and started running to get down the mountain before something happened to them. As the class struggled to get to a safer spot, Yuki slipped on the rain-soaked path and fell off the edge. In her fall, she banged her head and then her back against many trees on the way down before finally falling off a rocky side of the mountain, causing her to break her neck, which undoubtedly killed her - if she wasn't already dead from internal injuries coming from hitting her head and back.