I can definetly suggest Black bullet. This anime is a beautiful anime with so much plot that made me cry sometimes and so much action. I can just say watch it. It is definetly worth your time.

Great Teacher Onizuka, is a comedy anime about a teacher who previously was a member of a gang.

https://myanimelist.net/anime/245/Great_Teacher_Onizuka?q=great

Watched last week Youjo Senki

https://myanimelist.net/anime/32615/Youjo_Senki?q=youjo%20Senki

It is good issekai anime but light novell better

Mob Psycho 100

https://myanimelist.net/anime/37510/Mob_Psycho_100_II

+Very interesting and engaging premise +Great art and animation style which is suitable for a mystery anime +Main characters are realistic and interesting +Great OSTs, OP and ED, excellent voice acting +Lots of philosophical themes

-Story becomes a little monotonous in the second half -It starts to feel a little rushed, especially in the last quarter -Many characters got a very little screentime and character development -Many things, including the ability 'Revival', are left unexplained -Sometimes it becomes predictable https://myanimelist.net/anime/31043/Boku_dake_ga_Inai_Machi

School Rumble

https://myanimelist.net/anime/24/School_Rumble?q=schoo

My favorite anime would have to be Clannad and Clannad Afterstory. https://myanimelist.net/anime/2167/Clannad https://myanimelist.net/anime/4181/Clannad__After_Story I was a young impressionable boy when I saw these, and I know some people who don't like them. Personally, I feel like I was very much affected by these anime due to the strong emotions and importance it puts on family. It's definitely a slog to get through, and starts rather slow, but I really love the main character and the girls, as well as his goofy best friend.

It's also very sad, and I cried many times before finishing the anime.

I love many other anime, but there's so many to list and I don't remember all of them because I watched most of them a long time ago.

These include Steins;Gate and Higurashi, as mentioned above, as well as Code Geass.

A lot of the anime in this thread are very good as well.

Toradora is an amazing romance anime, the characters are so cute and so well designed.

https://myanimelist.net/anime/4224/Toradora?q=toradora

I will recommend you Monster https://myanimelist.net/anime/19/Monster.

It's an amazing seinen animated by Madhouse.

https://myanimelist.net/anime/20899/JoJo_no_Kimyou_na_Bouken__Stardust_Crusaders?q=jojo

https://myanimelist.net/anime/31933/JoJo_no_Kimyou_na_Bouken__Diamond_wa_Kudakenai?q=jojo

https://myanimelist.net/anime/37991/JoJo_no_Kimyou_na_Bouken__Ougon_no_Kaze

Jojo's Stardust Crusaders, Diamond wa Kudenakai and Ougon no Kaze.

https://myanimelist.net/anime/31043/Boku_dake_ga_Inai_Machi

Erased (Boku dake ga Inai Machi) is an amazing anime. I don't want to spoil it but it's a murder mystery with a bit of time powers involved. I highly recommend it. It's done so well.

-Hopefully it's okay to make another recommendation. xD-

Grisaia no Kajitsu

https://myanimelist.net/anime/17729/Grisaia_no_Kajitsu?q=grisa

Most of them was already mentioned above, so I'll just add three from my favorites that I really like to rewatch: Record of Lodoss War, Trigun and Cowboy Bebop.

Jojo no Kymyou na Bouken: Diamond wa Kudenakai https://myanimelist.net/anime/31933/JoJo_no_Kimyou_na_Bouken__Diamond_wa_Kudakenai?q=jojo

Fullmetal Alchemist Brotherhood https://myanimelist.net/anime/5114/Fullmetal_Alchemist__Brotherhood

I will recommend those two because i really enjoyed them.

try goblin slayer it a rpgmmo style with a dark gener, very good

https://myanimelist.net/anime/35790/Tate_no_Yuusha_no_Nariagari?q=the%20rising Not going to be aired yet but, best isekai in my opinion

You can try out Black Clover, the mc does scream a lot but it is pretty fun as a shounen imo

Guilty Crown was pretty awesome imo.

Medaka Box

https://myanimelist.net/anime/11761/Medaka_Box?q=Meda

D-Frag

https://myanimelist.net/anime/20031/D-Frag?q=D-Frag

Mondaiji-tachi ga Isekai kara Kuru Sou Desu yo?

https://myanimelist.net/anime/15315/Mondaiji-tachi_ga_Isekai_kara_Kuru_Sou_Desu_yo?q=monda

Gintama

https://myanimelist.net/anime/918/Gintama?q=Ginta

A certain magical index

https://myanimelist.net/anime/4654/Toaru_Majutsu_no_Index?q=a%20cer