Higurashi Furu Arima Chinatsu No Fukashiginaru Natsu No Hi (Gentosha Bunko)

[Machine Translation] A parent and child suddenly disappear in public. A childhood friend who was taken away by a UFO at the top of a mountain. Are the mysterious incidents that occur around Chinatsu Arima, who has returned home to her parents' house, really mysterious phenomena or intentional crimes? And what is the true identity of the "apparition that looks exactly like herself" that often appears in front of her? An unpredictable, double and triple twist awaits in this coming-of-age mystery of a summer.

公衆の面前で突如として姿を消した親子連れ。山のてっぺんでUFOに連れ去られた幼馴染。実家に帰省した有馬千夏の身の回りで起こった不可思議な事件は、はたして怪現象なのか、故意の犯罪なのか。そして、彼女の前にたびたび現れる“自分そっくりの幻”の正体とは。予測不能、二重三重のどんでん返しが待ち受ける、ひと夏の青春ミステリー。