Because you like Oscar Jarjayes in Rose of Versailles

From secret organizations to alien attacks, Kyon's life has been one weird, unexplainable thing happening after another. See them in The Melancholy of Haruhi Suzumiya.

Nozomu's name translates to despair, which is fitting for him. See them in Sayonara, Zetsubo Sensei.

After Rintarou Okabe develops the Phone Microwave, some of his fantasies start to seem uncomfortably real. See them in Steins;Gate.

With most of the people that Sango loved now gone, the only thing she wants is to kill the demon who destroyed her village. See them in Inuyasha.

After alien Haruko rides in on her Vespa, giant robots spouting from Naota Nandaba's forehead soon become the least of his worries. See them in FLCL.

Undercover as an average high school student, Kallen Stadtfeld is actually most at ease when the action's fast, furious, and dangerous. See them in Code Geass.

An alien, a time-traveler, and an esper are following Haruhi Suzumiya, who – unknown to herself – is a near-omnipotent reality warper. See them in The Melancholy of Haruhi Suzumiya.

The witty Aku would be an ideal dinner guest, if he weren't a demon. See them in Samurai Jack.

After several hundred years of shutting himself out from the rest of the world, Japan's not used to dealing with nations, See them in Axis Powers Hetalia.

Yuri is living in the afterlife, which takes the form of a high school where no one dies. But if you follow the school's rules and live a "normal" life you vanish. See them in Angel Beats!.

Years of being the less desirable Vargas sibling have given Romano quite an inferiority complex, as well as the temper to match. See them in Axis Powers Hetalia.

Vash might act like a carefree, peace-loving goof, but it's not wise to underestimate this "Humanoid Typhoon." See them in Trigun.