The mc in the story is a woman who longed for the days she was popular. One day she met her hs classmate who's now a scientist or something, and they just developed a drug that makes you younger ir go back to your former self. So the girl took the drug and she turns into her high school self. Can you tell methe title because it's in japanese so I forgot and it had only a chapter! I wonder if it's been updated that's why I wanna know. Thanks!