- Voice Actor (CV)
- Aki Toyosaki
- Role
- Protagonist
- Identity
- Second-year middle school girl, eldest daughter of the Hayase family, future scientific researcher, and time-traveling adventurer
Personality
Cheerful and bright
Proactive go-getter
Adorably absent-minded
Insatiably curious
Tenacious and determined
Mari Hayase may appear to be an ordinary eighth-grader, but the mysterious three-year disappearance of her scientist father set her on an extraordinary path. Armed with a cryptic ancient book and a magical pendant, she finds herself leaping across different eras in history. Along the way, she crosses paths with legendary figures who shaped the world, and through these remarkable encounters, the girl who once struggled with science gradually discovers a burning passion for it—ultimately carrying on her father's legacy as a researcher in the far future.