Oosaki Riku♂

The protagonist. He has a clock that lets him travel back in time given to him by Ren. Since 5 years ago, he became a regular time traveler. He has a strong sense of responsibility with a firm will. His purpose for time traveling is to change the future that cannot be changed. Traveling back in time, he helps a variety of people, and has interacted with meddlesome people. In order to earn money for his travels, he works part time at a lot of places. People often misinterpret him as a NEET, but he in fact has a job.