/ Anime & Comics / King's Engine
An ascended weeb gets summoned by Truck-sama to be his champion in a battle of Gods.
It's basically an everyday fanfic of a guy going to different worlds. It's starts in DxD.
Although the MC uses his key to open many locks. Its will probably not be a harem story or may be it will be... who knows...
"For his almighty Truck-sama, he shall go to any lengths, be it heaven or hell..."
Author Sect_Master_69