If you liked
Bokura no
|
...then you might like
Gunslinger Stratos The Animation
|
Both involve alternate universes being manipulated into fighting each other for a third alternate universe's benefit.
If you liked
Ore no Imouto ga Konnani Kawaii Wake ga Nai
|
...then you might like
Sword Art Online
|
Both involve characters with "frowned upon" hobbies, where these hobbies not only help them make friends, but also helps them become closer with siblings.
If you liked
.hack//Roots
|
...then you might like
Sword Art Online
|
Both involve characters playing in an MMORPG where what goes on in the game is affecting the outside world and visa versa. Both games are run by shady companies in the real world. Characters develop deep friendships with other players in the game.
If you liked
Bokura no
|
...then you might like
Mahou Shoujo Madoka★Magica
|
Both are about children entering contracts to gain the power to help save the world, but with some nasty catches. Both ponder the same dilemmas: 1) Is the price of gaining power actually worth it? 2) Can you trust anyone who hands out such powers? 3) Is the world really worth saving? 4) What is the difference between you and your enemy?