If only there were someone like me -. Lete is a young man who works as a caretaker of a clock tower. He is visited by Taiga, who he spent his childhood with. Confused by the sudden reunion, he decides to let Taiga stay at the clock tower, but a part of the meteor shower that had arrived has crashed into the clock tower. Lete finds a hidden room while exploring the clock tower broken by the meteorite, but there is a mysterious device there... もし、僕と同じ人間がいたら――。時計台の管理人をしている青年・レテ。そんなレテの元に幼少期を共に過ごしていた大河が訪ねてくる。突然の再会に困惑しながらも大河を時計台に泊めることにするが、到来していた流星群の一部が時計台に墜落していた。レテは隕石で壊れた時計台を探索している中で隠し部屋を見つけるが、そこには謎の装置があり…。