Description:

Before I realized, I had become the guardian of a dungeon, a Demon Lord. I was suddenly in a dangerous world with giant monsters loitering around, fighting for their existence, so I thought to go about developing the dungeon in order to not die but —- for some reason I was having quite the good time…. How did it turn out like this? The protagonist, Yuki, having to live in that world now, uses his bold and sharp senses and spends time with a supreme dragon girl and a vampire girl; Sometimes laughing, sometimes being angry, passing days doing what he likes.

Description:

"Come on, kill all those bandits for me already!" "No thanks. I don't wanna do any work." My name is Keima Masuda, and my hobby is spending each day doing exactly nothing... but one fateful night, I was summoned to another world where I met a blonde young girl who I named Rokuko. It seemed that fortune had favored me and I would soon be living a wonderful life free of work. But even though I'm a guy who loves sleeping more than eating, Rokuko demanded that I help her. "Save my dungeon! By the way, since you're the Dungeon Master, you'll die too if the Dungeon Core is destroyed." The dungeon only had one room, and it was already surrounded by bandits. Seriously? It's a checkmate already. I've gotta break out of this impossible situation so I can stop working and just sleep! (Source: J-Novel Club)

Description:

One sunny leisurely day, a woman visited my house and asked me if I were interested in managing a dungeon along with support from goddess. But of course, I refused. Eh? Shouldn't I ignore a person in trouble, moreover if it's a beautiful woman? No way! That's too bothersome, and why do I have to do that? I'm perfectly satisfied with my comfortable life now, throwing it away is just overly stupid...... ...sigh, fine, so it's go to another world, become a dungeon master, manage a dungeon and deal with the Mana circulation problem? Understood, but how to do it? (Source: MU)

Description:

Seventy-two feudal demon lords vie for power. The weakest among them is also the youngest: Ashtarot, who retains memories from his human life as a researcher. While he possesses neither an army nor immense power, his talent is his pragmatism. From killing potential heroes before they gain power to using underhanded tricks and lies, everything is fair game for the 72nd demon lord.Ashtarot's ultimate goal is to dominate the other demon lords—whether by conquering them or allying with them—and ascend as the Demon King. Accompanied by the demon maid Eve and his subordinates, Ashtarot makes a name for himself as the demon lord who will use any tactic to win—utilizing the power known as realism!(Source: MAL)