The Mecha from Another World Is so Awesome!

This is a not-so-beautiful world. War and death are the main themes that fill this world. An ordinary person who was too ordinary to leave any deep impression on people traveled through time, but he inexplicably traveled into this world before he had time to bring any cheat system, and then he got a new name: Baal. He is still a mediocre and inconspicuous little character like in his previous life, but he awakens by chance and becomes a "knight" who leads the war in this era. After that... Hundreds of years later, in a peaceful and prosperous era, a newly appointed confidential keeper accidentally opened a top-secret record at the bottom of the filing cabinet. After opening it, all the words written on it were: Mechas are awesome! After that, the security guard couldn't sleep anyway. He read carefully for half the night, and then he saw the words between the words. It was written all over the book, "*Mar's! Be serious! The battlefield is not for you to visit the brothels!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.