Reito and friends are heading into the abandoned hospital said to be the last known location of the missing virologists! There, they uncover a slew of shocking secrets--including the true identity of a certain individual!

Shota's classmates might be sexy and satisfying in oh-so-many ways, but he's still pining after Yuzu-sensei. As he grapples with his frustration, a transfer student shows up at school: Shota's old classmate, Shion. What will Shota do when he has her under his thumb?

The knight Celine has returned home to Nargala at last. With her help and that of the sorceress Joanna, Arc manages to stall the progression of his father's illness. But before he can put further plans in motion, a voluptuous high elf named Felaris comes to him with a request. Her hometown is under attack, and in exchange for Arc's assistance, she promises all kinds of rewards--both magical and more earthly delights.

The hijinks continue in this comedic reimagining of World's End Harem: Fantasia. Separated from his true love, Aurelia, Lord Arc Nargala takes a year-long vow of abstinence...just as he starts his first year of high school at the all-girls Fantasia Academy. Familiar faces--both friend and foe--appear, complicating Arc's love life and putting his vow to the test. Will it all come to a head as Valentine's Day approaches?

A vaccine for the MK Virus draws near, and with it, hope for humanity's future! But it can't come to fruition without some help from Reito's blood! All the women who have helped Reito on his journey want to be the one to stimulate his male hormones to improve the vaccine's potency. When he draws closer to Elisa, a shocking secret comes to light about her past. Who will Reito choose to be humanity's last hope?

Arc has been reborn as the "Black Dragon," with the power of Macht. He tests his new power on the inexperienced maid Wenna, pitting her in a duel against the swordswoman Celine. Meanwhile, Arc's father has fallen ill, and Arc's uncle has come to claim the throne of Nargala. Can Arc use his newfound power to protect his country as well as bending Wenna to his will?

Having left Arc's employ, Celine finds herself invited on a dungeon quest with the local Adventurer's Guild. Is the mysterious woman who invited her more than meets the eye? Meanwhile, Arc regrets what happened when his Macht went berserk. He seeks out Lati to learn to control his budding powers, but then discovers that his father's illness is not what it seems. He must travel to a foreign land to find out the truth!