Fukada Sametarou

A hero returns from vanquishing the demon lord, but the demon lord, with powers sealed, follows him back to Japan in an attempt to settle the score!

To conquer the dungeons that suddenly appeared on Earth a hundred years ago, students now attend academies to train as adventurers. Among them are two rivals: the academy’s strongest delinquent, Sainokami Kuroto, and the elite noble honor student, Mononobe Yukihime. One day, the two of them find themselves trapped in a dungeon… inside a room that they can’t escape unless they hold hands!? Will these sworn rivals be able to clear this high-difficulty mission and conquer the dungeon—!?

Despite being the hero who single-handedly defeated the Demon King, Sage Cain was feared as the "Scum Sage" due to his intimidating face and a slight misunderstanding, and was consequently banished from the kingdom. Living a lonely life alone in the frontier lands, one day a package suddenly arrived from the kingdom. Inside was none other than Philionora, the Demon King's daughter, possessing immense magical power! And by some twist of fate, Cain ended up having to raise this daughter, Philionora—?!Original Web Novel

Koyuki Shirogane, a girl known for her beauty and equally harsh tone, giving her the nickname "Venomous Snow White," is saved by Naoya Sasahara as a man tried to hit on her. She may try to act strong, but on the inside, she is merely a young girl. Having been saved by Naoya, Koyuki falls for him, and Naoya on his end falls for Koyuki's innocent and cute attitude. Both fail to be honest with each other, but eventually bring themselves closer to admit their feelings for each other. Official English Light Novel

In the back of the forest lives Allen, the people-hating wizard. He is feared by the people around him and called the "Demon Lord". One day, while living out his life as a hermit, he finds a young girl named Charlotte who collapsed. Although innocent, she was accused of evil wrongdoings, had her engagement broken and was forced to flee her country. Upon hearing that, Allen recalled the bitter experience of being betrayed by a party he once believed to be his companions. Hearing the story of the 17 year old’s exploitation, Allen decides, "I'll let her live in my mansion, and I'll teach her all sorts of bad things..."