Jikan Dorobo Chan Ha Dokidoki Sasetai Ore No Natsuyasumi Wo Kaketa Renai Shinri Sen (Dengeki Bunko) [Light Novel]

[Machine Translation] It is the last day of the first semester. High school student Kashima Satoru, who is bored with his daily routine, receives a confession of love from his class idol, Fujinomiya Shirayuki. The next moment, however, he is sent back in time to September 1, ending his summer vacation before it begins. The true identity of Shirayuki is that of a "time thief" who deceives people with her beauty and steals their "time" with a mysterious hourglass. SATO, who has had his entire summer vacation stolen from him, must engage in a fierce psychological battle with the time thief in order to get back a month's worth of "time".... This is the story of me, a high school freshman whose summer vacation was stolen from him, and how he tries to regain his youth.

一学期の最終日。日常に飽き飽きし、ただ毎日を消化していた高校生・加嶋颯は、クラスのアイドル・藤ノ宮白雪からまさかの告白を受ける。だが次の瞬間、颯は9月1日へとタイムリープし、夏休みが始まる前に終わっていた。白雪の正体は、その美貌で人を惑わし、謎の砂時計で相手の「時」を奪う“時間泥棒”。夏休みをまるごと盗まれた颯は1ヶ月分の「時」を取り返すため、時間泥棒との壮絶な心理戦に挑むことになるが...。デート中に相手にドキドキすると「時」を奪われる「時間争奪ゲーム」―これは、高一の夏休みを盗まれた俺が青春を取り戻す物語である。