The Invincible Nanny in Fairy Tail

[Invincible, invincible, or TM invincible] Raphael traveled through time, and it was still the world of Fairy Tail Good news: There is a system Bad news: The system traveled to the wrong world and escaped. Good news: Saitama's physique remains Bad news: You'll have to exercise and you'll go bald. … I wrote this book while reading the comics. Except for some experiences of the original protagonist when he was a child, I basically completed the work according to the progress of the comics, so you can follow it without worries. The work will be completed when you finish reading the comics.