The strongest and loneliest demon king is confronted by a bright hero, and the demon king is drawn to the hero.

Sakura is putting her neat freak habits to good use! She's wiped away the grease and grime with baking soda. Now her new citrus cleaner is cutting through alkaline build up left by the witches curse. All demons bow to the skills of housekeeper saint Sakura! But her clean streak might have caught more attention than she originally thought...

For Takatsuki Sakura, a trip to the library turns into a fantastical journey. She has been swept away to a grandiose castle ruled by a gorgeous demon king. Magic and wonder covers every room. Taking it in, Sakura can hardly breathe... because of all the dust and dirt. A curse has prevented this kingdom from cleaning. Only Sakura and her housekeeping knowhow can scrub away this dark magic grime!

Even when she finds herself in an unknown land as the guest of a demon king, Sakura can't help herself from scrubbing the whole castle top to bottom. She's making the castle as sparkling as her smile, until a hero crashes through the window! He's here to rescue Sakura from the suddenly possessive demon king. Doesn't he realize he is tracking mud all over the floor?!

He may look like nothing but a country boy, but Chrono Alcon is actually one of the most powerful demons the world has ever seen! All he's interested in is attending school like any other kid, but when the Demon King finds out about Chrono's power, he'll have to spend his days studying, and his nights in the dungeons, fighting monsters...?! The hit fantasy adventure manga comes to print, perfect for fans of Goblin Slayer, The Rising of the Shield Hero, and That Time I Got Reincarnated as a Slime! A FATHER OF FURY! After unintentionally enslaving Sophia and Yukino, Chrono and the Special Exploration Unit have been searching the previous Demon Kings’ dungeons for anything that might remove the bonds of domination. The Demon King remains hopeful that a solution will eventually be found in a dungeon, but time is running out. Sophia’s father, the frighteningly powerful Vampire King, is coming to visit his precious daughter, and if he finds her enslaved to Chrono, his rage could destroy the entire city!

Chrono, a young jinn from the countryside, continues to explore the dungeons of the previous Demon Kings while taking classes at the Demon King’s castle. After the Kijin incident, something unusual is happening to his classmate Lily...! This is the fourth volume of the popular fantasy school life light novel that’s been comicalized!

Thanks to the power of the people’s wishes extending past kingdom borders, destruction was avoided and peace has fallen upon the underground world. But there are many unsolved mysteries surrounding the death of the Goddess of Creation, the remaining Selected Eight, and the identity of the self-proclaimed father of the Demon King... Anos and his followers head back underground in search of clues and discover the existence of Erial—Stars of Creation that have Anos’s missing memories sealed within them. But the land where the stars are hidden is controlled by the Sorcerer King, a powerful demon from the Mythical Age. Will the Stars of Creation be the key to solving all these mysteries? Find out in volume 8, the Father of the Demon King arc!