Great Teacher Onizuka, Bleach, Texhnolyze, Mushoku Tensei, Goblin Slayer, Hajime no Ippo, Madoka Magica, Parasyte The Maximum, The Count Of Monte Cristo, Serial Experiments Lain, Gundam Seed, Vinland Saga, Bunny Girl Senpai. I like almost everything that has good character development.
I consider it to be the best shonen to air since Demon Slayer’s first season ended (though I admit I’m not watching Black Clover & haven’t seen any One Piece since Skypeia). It borders on seinen with the intensity of some of it’s violence & philosophical/psychological issues. Hope you enjoy.