Otaku siblings Tamotsu and Niwaka Denkigai are shopping in Akihabara when it is overrun by vampiric cosplaying monsters! These creatures, known as "Bugged Ones," can possess anyone they bite and soon they begin causing mayhem across the city. As Tamotsu finds himself at the mercy of one of these creatures, he is rescued by the mysterious baseball bat-wielding Matome Mayonaka. Together, they fight through several more encounters with the Bugged Ones, but before long, Tamotsu is fatally wounded protecting Matome. With no other choice, she revives him as a high level Bugged One—just like her! Tamotsu and Matome, along with excitable otaku cosplayer Arisa Ahokainen, make up the group "The Electric Mayonnaise" and they begin dispatching the Bugged Ones in the only way they know how: by ripping off their clothes and exposing them to sunlight! [Written by MAL Rewrite]

Short specials that aired on the official website.

Mysterious Babylonian Tablets unearthed in Manhattan provide tantilizing clues about the location of the Tower of Babel - not the biblical one, but the original one, built out of solid gold! 

The Mob is out to get the gold, but so is Lupin III. 

It's Thugs vs. Thieves when Lupin & Co. go up against a fearsome flyswatting Polish Mafia boss, a bevy of beauty-contest policewomen, Zenigata, the hard-luck Interpol Inspector, a mysterious bag-lady AND his own girl-friend in a trans-continental trust-nobody trek after a treasure of biblical proportions! 

(Source: AniDB)

Leo the white lion was born on an ocean liner that crashed on the shores of a bustling city, where he spent his childhood learning the language and customs of humans. But something was missing. In search of his family, home, and a place to truly belong, Leo traveled back to Africa and began his journey to become the King of the Jungle. Leo's adventure centers around finding peace between the animals and humans who live in his African home, often competing for space and resources. As he grows, Leo must survive both the area's harsh environment, dangers from other animals, and humans who hunt lions like him for sport. Only communication and mutual understanding can end the fighting, and Leo's knowledge of human culture may be just what the jungle needed. Jungle Taitei is the epic story of a young lion's struggles to survive in a dangerous land.