Jikan Dorobou-chan wa Doki-Doki Sasetai: Ore no Natsuyasumi wo Kaketai Renai Shinrisen

is a Japanese light novel series written by Misaki Nagi, with illustrations by Unasaka. The series began publication on December 10, 2020 by ASCII Media Works under their Dengeki Bunko publishing imprint.

Synopsis
The last day of the first semester. A high school student, Akira Kashima, who is tired of everyday life and just digests every day, receives a confession from class idol Fujinomiya Shirayuki. But the next moment, Akira time-leaped to September 1st, ending before the start of summer vacation!

Shirayuki's true identity is a "time thief" who misleads people with his beauty and steals the opponent's "time" with a mysterious hourglass. Akira, who had stolen the entire summer vacation, will challenge a fierce psychological warfare with her in order to regain the "time" for one month.

A "time scramble game" where you are robbed of "time" when you get excited by your opponent during a date-this is the story of me who stole Koichi's summer vacation and regains youth.