Double Time Travel? Bringing a Goddess with You?

Why did I travel to a dead otaku who had just completed traveling to another world? What? He even brought a goddess with him! Do you want me to chop up the devil? Didn't I just fall asleep in math class? Huh? There are actually girls here who are willing to talk to me? And every one of them is more beautiful than the school belle! This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.