Actually, I was the strongest? It is an unofficial quiz app.

“Actually, was I the strongest? is a Japanese light novel series written by Aya Sumimori.
It has been serialized in "Let's become a novelist" since September 1, 2018, and has been published by K Ranobe Books (Kodansha) since May 31, 2019.
Illustrated by Ai Takahashi.
Substantial additions have been made to the book.
Comicalization by original illustrator Ai Takahashi has been serialized in "Wednesday Sirius" (company) since April 3, 2019, about two months ago.
As of September 2022, the cumulative circulation of the series has exceeded about 1.38 million copies.

TV animation is being broadcast from July 2023.