Last week Seven Seas announced on Twitter that they licensed the light novel series Didn’t I Say to Make My Abilities Average in the Next Life?!, and is set to release volume one in English on June 12, 2018. In Japan the series was titled Watashi, Nouryoku wa Heikinchi de tte Itta yo ne! — it is written by FUNA and illustrated by Itsuki Akata. The story began as a web novel (which appears to still be ongoing), and so far there are five light novel volumes released in Japan. There is a manga adaptation as well, which was also licensed by Seven Seas.
Synopsis: When she turns ten years old, Adele von Ascham is hit with a horrible headacheâ€“and memories of her previous life as an eighteen-year-old Japanese girl named Kurihara Misato. That life changed abruptly, however, when Misato died trying to aid a little girl and met god. During that meeting, she made an odd request and asked for average abilities in her next life. But few thingsâ€“especially wishesâ€“ever go quite as planned.
I had some trouble finding more details for this series, but it appears to indeed be an isekai story (via reincarnation) set in a swords ‘n sorcery fantasy world, but with a comedic tone.