Even if she's expected to recover, Lala is still stuck in a pint-sized body--and she resolves to do something about it. Unfortunately, her invention goes totally haywire, shrinking Rito and Haruna down to be even smaller than she is! So small, in fact, that they could easily be stepped on. What's worse, Haruna's parents are coming home to visit. Everyone's going to need to work overtime to keep this mad-science mishap a secret!

When Commander Zastin leads a group of soldiers to take down Nemesis once and for all, Rito winds up getting caught in the crossfire. It's a rumble between the king of the cosmos and the ultimate living weapon! The action and perversion reach a whole new stage when To Love Ru blasts off for outer space!

Mea may be safe from the domination of Master Nemesis, but everyone in Sainan is still in big trouble. The overwhelming, perverse power of Darkness still holds Yami in thrall, and the beautiful living weapon is on a rampage! There's just one hope to return her to her former self: her connection to Yuuki Rito. Yet with love and death all mixed up in Yami's mind, will Rito survive long enough to make a difference?

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!

'" 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 terrible, perverted power of Darkness has completely taken hold of Yami, and there's only one thought in her twisted mind: kill Yuuki Rito! When Lala rushes to her love's defense, it's time for a no-holds-barred battle between princess and assassin. Meanwhile, Mea struggles against the domination of Master Nemesis--will she be able to regain her own body in time to stop the chaos?

Defeating the Darkness that threatened Earth didn't come without cost--Lala used up so much power in the fight that she wound up shrinking down to a pint-sized version of herself. Spurred by concern, the Earth is getting an unexpected visitor. It's the Queen of Deviluke: the most powerful woman in the universe, and Lala's mother! How will Rito handle the arrival of a woman said to be so beautiful that simply looking at her drives men mad?