I’m going to make this school my harem!When a cute girl asks Issei out, he believes his twisted fantasies are finally coming true. Too bad the girl sprouts a pair of black wings and stabs him with a spear on their first date! Saved by his school’s number one beauty, Rias Gremory, Issei is transformed into a demon and made her servant. Issei hopes to rise through the ranks of demonkind to grow powerful enough to create his harem, but in a city with fallen angels and insane priests, he’ll be...

When unlucky high school letch Issei is murdered by his first-ever girlfriend on his first-ever date, who should jump to his rescue but the hottest girl in school, Rias-senpai! She informs Issei that he's been reincarnated as a demon and that it's about time he got to work-for her! Caught in the bosom of an age-old war between angels and demons, Issei soon discovers that being enslaved by a demonic beauty isn't quite all that it's cracked up to be!

“RIAS GREMORY’S VIRGINITY BELONGS TO ME!”Issei is finally beginning to adapt to his new life as one of the beautiful Rias’s demonic servants. Just as things start looking up for the perverted high schooler, however, a cocky pretty boy named Riser arrives, claiming to be Rias’s fiancé! To save the prez from a marriage she doesn’t want, Issei and the other members of the Gremory Familia will have to battle Riser’s team. Even with the mighty Boosted Gear at his disposal, can Issei really win ...

THE KNIGHT SEEKS REVENGE With a sports festival on the horizon, the Occult Research Club expects smooth sailing after all the recent trouble. Everyone seems happy enough-except for Kiba, that is. The pretty boy hasn’t been himself since he saw an old picture of Issei. Things only get worse when two beauties arrive in town with powerful Holy Swords called Excaliburs-deadly weapons Kiba long ago swore to destroy. Issei promises to help his friend, but do the demons really stand a chance agai...

The fateful rating game has finally begun! Rias and her team may be hot stuff, but they find themselves struggling against Team Sohna and its members, who are putting their very lives on the line! When things look desperate, Issei's strongest-ever technique explodes forth! And it's coming for Team Sohna's...boobs?!

Is love in the air between lowly servant Issei and his mistress, the bewitching Rias?! Reincarnated as a demon by Rias, the school beauty, Issei finds himself in servitude to his devilish mistress. But when Issei befriends Sister Asia, a nun from the Church, which is widely known to be hostile to demonkind, he's practically asking for a target on his back-as Rias is quick to inform him! Worse yet, when the good sister is kidnapped by a fallen angel, Issei rushes to her aid! But little does...

Issei's on a rampage?! "President Rias's virginity is gonna be mine!!" President Rias, the beautiful young devil, is betting her engagement on the outcome of a "rating game," and Issei's joining the fight. But does he even stand a chance against Riser's harem of devil girls...?!

A VACATION IN THE UNDERWORLD! School's out for the summer, and Issei's already dreaming up fantasies of hitting on hotties at the beach. His master, Rias Gremory, has other plans for him and the rest of the Occult Research Club, however-a season-long training stint in Hell. As if that wasn't disappointing enough, Issei's instructor is a terrifying dragon that tried to kill him! It may sound like a brutal lesson plan, but he'll need it because a few of Vali's allies decide to crash an under...

The Rating Game with Sairaorg is days away, and the Gremory Familia is training hard to get ready while preparing for the Academy Festival. However, trouble strikes when Rias suddenly becomes upset with Issei, leaving the hapless bonehead bewildered about how to fix things. He’s not even sure why the prez is angry. Okay, he has one idea, but it’s got to be too far-fetched...right? Mending the pair’s relationship and defeating Sairaorg may require Issei to overcome his greatest challenge—an...

"Would you like to have a fling with me?" Akeno-san drops a bombshell?! Issei has just started cohabiting with his beloved President Rias, so he's all "viva sexy time!" But will Akeno-san's proposition lead to a deadly lovers' quarrel?! And what will Issei do when faced with a battle over the holy swords?!

A SHUT-IN TIME STOPPER! After the recent trouble with fallen angels and Excaliburs, Rias is finally allowed to unseal her first Bishop-Gasper. Issei is thrilled to find that this new addition appears to be a cute blond girl...but his hopes are quickly dashed. Not only is Gasper a cross-dressing boy, he’s also a total recluse with the power to freeze time! As if getting a shut-in to come out of his shell wasn’t hassle enough for poor, perverted Issei, a peace conference among demons, angels...

TWO TESTS?! OH, AND THE INFINITE DRAGON.The time has finally come. All of Issei’s effort punching gods and heroes has paid off. He’s been recommended for a promotion to middle-class demon! Unfortunately, he must take a test to seal the deal, and it bangs up right against his midterms! Now the poor pervert is studying twice as hard. As if that wasn’t bad enough, Ophis, the Infinite Dragon and leader of the Khaos Brigade, shows upon Issei’s doorstep and asks to stay with him for a few days! ...