Seven Seas Entertainment imprint: 370 books

Diablo, Rem, and Shera have arrived at the Bridge of Ulug only to discover that an army of Fallen are marching towards Faltra! This should be no problem for a powerful Demon Lord like Diablo...except that Diablo is actually Takuma, a video game addict who's in way over his head. Will Diablo's stats hold up in a real-life battle?

When Shera's brother Keera tracks down Diablo and the others, he demands that Diablo remove the enslavement spell on Shera so he can take her back to the Elf kingdom. But Shera would rather stay with Diablo and Rem, even if that means staying Diablo's slave. Diablo might not be a real demon lord, but he'll have to act the part if he wants to protect Shera from her own family.

High school student Toujo Basara’s life has taken a turn for the strange. When his father suddenly remarries, Basara finds himself with a couple of drop-dead gorgeous step-sisters--who just happen to be members of a demon clan! Naruse Mio is a Demon Lord and Naruse Maria her succubus servant. Chaos...

ALL HELL BREAKS LOOSE! Basara Toujou is hesitant about his father’s sudden decision to remarry, and yet can’t deny it comes with a couple perkstwo adorable little sisters. But Basara’s new family isn’t all it appears to be, and when his father leaves on an abrupt business trip, Basara learns...

“A big brother always protects his little sister…even if it turns the whole world against him!” The enemy is finally making their move, seeking the Demon Lord’s power hidden within Mio’s body. But during the assault, a pinnacle moment of Basara’s past is revealed, and with it, a true glimpse...

A NEW HERO APPEARS! With hardly a moment’s rest since saving Mio from the White-Masked Demon, an even stronger enemy has appeared. As the timetable tightens on the new Demon Lord’s reign, he’ll stop at nothing to gain the power that resides in his predecessor’s daughter. Just when it appears...

“People aren’t limited to just one precious thing” Mio, Heiress to the Demon Lord’s Power, begins her battle with the heroes who have been sent to eliminate her. But Basara has a plan to curb the crushing force they have brought. Fight for the things that are precious to you! The mad flashing of swords continues in volume 4!

Enraptured by the idea of school, Maria decides to drop in on Basara during class! Her visit soon turns into a full-on investigation of the school grounds… “in case of emergencies”. A likely excuse, until an emergency involving Basara and Mio occurs in the girls locker room. Meanwhile, true danger on campus is rumbling in the distance…the fated treacherous battle will soon begin!

After having been chased to her wit's end by Takashi, master of Byakko the Spirit Spear, Mio finds herself in a pinch. Yuki has made her last stand, and the wounded Basara has yet to regain consciousness. All preconceptions will be blown away in this thrilling battle of love and hate!

Everything's on the line--Basara and his allies charge headlong into battle against their deadliest enemies yet. Zest brings her full might to bear against them, but even she pales in comparison to the threat waiting in the wings: The dread demon Zolgia! Against a foe so strong, has Basara met his match? He'll need everything in his arsenal to make it out of this one alive!

Basara's final showdown with the demon Zolgia rages towards its inevitable conclusion! With the power of a Demon Lord on the line, neither side can afford to back down. The fate of both the human and demon worlds are at stake: The Testament of Sister New Devil reaches its exciting finale!

Mio's been captured by the man who destroyed her family! Just when she thinks all hope is lost, Maria makes an appearance--but is the succubus really there to save her? Meanwhile, Basara is trying desperately to get Lars to tell him where Mio's been taken, but Lars won't give up her location without...

Tasuku is starting to feel at home at the drop-in center--just in time for him to help a younger student who also hangs out there. Misora Shuji likes to wear girls’ clothing but is unsure about their gender identity. Will Tasuku’s guidance offer Shuji some clarity or just make things harder?

Reg and Riko's descent to the bottom of the netherworld has begun! With a perilous journey ahead and their pursuers from the surface not far behind, the trek is already testing the limits of their strength. Will their quest end before it's barely even started?