Long ago, a princess and a knight fell in love, but couldn't be together. They promised to meet again in the next life where they could freely love each other, but there's a problem—they weren't reborn in the same year! Now the princess, a 39-year-old single woman living in modern Japan, just bumped into the reincarnation of her beloved knight: a 17-year-old high school student who recognized her immediately. To her surprise, that teenage boy is determined to sweep her off her feet again, and she has no idea how to deal with that!

Raise wo Chikatte Tensei shitara Taihen na Koto ni Natta is a web manga released on the author's Twitter account from September 15, 2018 to July 16, 2020, and published in print by Ichijinsha from June 25, 2019 to November 25, 2020. The series was published in English as We Swore to Meet in the Next Life and That's When Things Got Weird! by Seven Seas Entertainment from September 29, 2020 to September 21, 2021.