Bleach
For as long as he can remember, Ichigo Kurosaki has been able to see ghosts. But when he meets Rukia, a Soul Reaper who battles evil spirits known as Hollows, he finds his life is changed forever. Now, with a newfound wealth of spiritual energy, Ichigo discovers his true calling: to protect the living and the dead from evil.
YouShouldKnow@YouShouldKnow
Having long avoided this due to the hype it had, I finally decided to pick it up. Hype can often be just that: hype.
In the case of Bleach, it was justifiable and were I younger, it definitely would've been that good. You see, the main character is a teenager who discovers that his ability to see spirits can allow him to battle transformed and evil ones too.
Since the main character is a teenager, he does a lot of what teenagers do. He's impulsive and lacks foresight, somewhat arrogant, doesn't admit fault easily or gets in over his head pretty often.
Sometimes, his mistakes are very repetitive and seem to be a device plot.
Talking about device plots, this series has fillers and a good load of them too. If you aren't into that, then look for the filler list and skip them.
Additionally, what this sorely lacks is a version with all the flashbacks, intros, outros and fillers cut out similar to what Dragon Ball Kai did.
Aside from that, the world is well described, the lore interesting and the characters well developed. One is able to understand their intentions and motivations (even though they often boil down to the basic 6 "sins" wrath, envy, etc.)
Seriously, if this had a supercut I'd watch it a second time.