'" High school love is hard enough all on its own, and for Rito, it happens to involve the gorgeous princesses of a galactic empire, interstellar assassins, a ghost-girl, and that''s just for starters! The antics between all the oddballs at Sainan High have a way of creating one risque situation after another...but that idyll isn''t going to last much longer. The sinister Master Nemesis has long warned of the power of "Darkness" lurking inside of Yami. The time has come for that Darkness to awaken! Can Rito survive the true power of a living weapon? "'

THE DARKNESS RISES! High school love is hard enough all on its own, and for Rito, it happens to involve the gorgeous princesses of a galactic empire, interstellar assassins, a ghost-girl, and that's just for starters! The antics between all the oddballs at Sainan High have a way of creating one risqué situation after another...but that idyll isn't going to last much longer. The sinister Master Nemesis has long warned of the power of "Darkness" lurking inside of Yami. The time has come for that Darkness to awaken! Can Rito survive the true power of a living weapon?

Life isn't easy when you're a high school student who is kinda-sorta engaged to the princess of the entire galaxy. All Rito really wants is a simple life with Haruna, his one true crush, but the universe has other ideas. Jealous alien suitors keep on trying to ruin Rito's life-- and the worst cosmic enemy he's encountered yet is about to make her appearance!

'" Rito and friends face off against the wrath of a killer body-snatching sword from outer space--and that''s actually the easy part of his day! The really tricky part is a little more amorous. Rito''s been close to all kinds of gorgeous girls, and Momo''s even pushed him to start inducting them into his own personal harem, but there''s one thing he''s never done with any of them: kiss! Now that Lala''s heard about how common kissing is on Earth, is it time for Rito''s relationships to go to the next level? "'

They might be gorgeous girls, but having the galaxy's most notorious assassin and the heir to the ruler of the universe at the same high school was probably a risky proposition. Filled with jealousy, Run and Saki conspire to set Lala and Yami at each other's throats! When these super-powered students clash in battle, it's Rito, as usual, left picking up the pieces. And that's just the start of his troubles--nefarious agents from outer space are starting to take an interest in the ladies of Sainan High!

THE WAR HAS BEGUN… Four months have passed since the war between humans and yokai began, and there seems to be no end in sight. Kevin and Lilian have been doing what they can to help, but since they’re also attending high school, taking part in a war is somewhat difficult. It’s a good thing Kevin’s boss has concocted a plan in which he and Lilian are essential. Kevin, Lilian, and Iris must travel to Los Angeles, California, and request the aid of Kuroneko, a member of the Four Saints. But wherever these three roam, trouble is sure to follow—and this time, it will take more than shonen manga antics to escape from the many dangerous and dangerously erotic situations they’re bound to run into.

After Nemesis was defeated by the King of Deviluke, Rito thought his life might settle back to normal. Or at least his version of normal, full of alien mad scientists trying to conscript him into a harem! But there's a flaw in his logic: he absorbed Nemesis into himself to save her, remember? And now, as she begins to recover, she's enjoying taking control of his body at very inopportune times...