If you're looking for manga similar to Di Gi Charat Summer Special 2000, you might like these titles.
Overlord is back with a humorous four-panel twist that'll have you rolling on the floor! Featuring the Great Tomb of Nazarick and your favorite characters, Overlord guru and extraordinaire Juuami is here with a new spin-off of the super-popular series!
Elite ninja Uchiha Sasuke travels the land with his teammates, searching for his brother Itachi. Pillow fights, video games, Christmas parties… There’s nothing this ninja won’t do to avenge his clan!
A transfer student named Taro Tanaka enters Takashi's class. Taro Tanaka turns out to be a space alien. Takashi becomes obsessed with trying to figure out the origins of Taro.
Eren and Mikasa enter a new school-- Titan Junior High! However, Eren's hated Titans for years-- can he get along with his new (harmless?) classmates? Featuring all of the characters from the main series as you've never seen them before, this series is sure to delight fans of Attack on Titan with a human vs. Titan volleyball match, a Titan rock band, and much more!
To the rest of the world, Umaru is kind, smart, and the perfect high school student. But her brother, Taihei, knows the truth: at home, she's a bratty, slovenly, lazy girl who eats junk food, plays video games, and throws tantrums when Taihei won’t buy her manga or do what she wants! Now, in addition to working full time to support their household, Taihei must do all of the cooking, cleaning and shopping while Umaru enjoys her carefree days as an unabashed, yet secretive, otaku.