best anime to watch which no one knows about?

i would say ,

naruto

Fairytail

one piece

hunter x hunter

gintama

ace of diamond

magi

haikyuu

ghost hunt

shineke no kyojin

hakuouki shinsengumi kitan

hanasaku no iroha

Hanasakeru Seishōnen

lovely complex

itazurana kiss

kamisama hajimimashta

ao haru no ride

say i love you

kimi ne todke

prince of tinnis

kuoroko no basket

Ookami Shoujo to Kuro Ouji

sword art online

hitman reborn

kare kano

bokura ga ita

Black Butler,

Tokyo Ghoul,

Angel Beats

death note

Fullmetal alchemist

Inuyasha

Psycho Pass

dark gray man

bleach

i still have alot more but those is all i could think of right now ....

Texhnolyze

Shoujo Kakumei Utena

Katanagatari

Basilisk

Boogiepop Phantom

Genshiken

Humanity Has Declined

Kino's Journey

Kuuchuu Buranko

Mononoke

Paranoia Agent

Tatami Galaxy

Shigurui

xxxHOLiC

Gankutsuou

Haibane Renmei

Uchouten Kazoku

Saraiya Goyou

Michiko to Hatchin

Rurouni Kenshin: Meiji Kenkaku Romantan - Tsuiokuhen

Gungrave

Hyouge Mono

Ginban Kaleidoscope

Pale Cocoon

Damekko Doubutsu

Mononoke (a spin off from the Goblin arc of Japanese Classic Horror, so you might want to watch that arc first)

Gakuen Alice

Pet Shop of Horrors

Now and Then, Here and There

Children who Chase Lost Voices

From the New World

Beast Player Erin

Moribito: Guardian of the Spirit

Starblazers 2199

Legend of the Galactic Heroes

Voices of a Distant Star

Daughter of Twenty Faces

Excel Saga

Haibane Renmei

First Love Limited

Diamond Daydreams

Lament of the Lamb

Into the Forest of Fireflies' Light

Kaleido Star

Kigeki

Kino's Journey

Le Portrait de Petite Cossette

Mahou no Chocolate

Scryed

Tale of Princess Kaguya

Vampire Hunter D: Bloodlust

Mermaid Forest TV

Don't Leave Me Alone, Daisy

Rose of Versailles

Aoi Bungaku

Baccano

Boogiepop Phantom

Mouryou no Hako

Saiunkoku Monogatari

So Long, Mr. Despair

Night Head Genesis

Princess Tutu

Petite Princess Yucie

Ramen Fighter Miki

Witch Hunter Robin

Wolf's Rain

Zankyou no terror

Boku dake ga inai machi

Hyouka

Magi: the kingdom of magic

Nichijou

Paradise kiss

Maburaho

Whenever I talk about a show on Netflix called HunterXHunter, no one knows what I'm talking about. So you may enjoy that. But it's in

Japanese with English subs so you probably won't enjoy it if you don't like that. XD

Jigoku shoujo(hell girl) i would also like to mention lamb(its an animated movie)but its awesome

One Punch Man just came out in Autumn 2015, its rising popularity but I think its not that popular, yet.

Shiki

Boku no Pico