Nightmare Fuel / Kuroko no Basuke

Keep in mind that nightmare fuel for this show is relative; it is a sports anime, after all. Nobody's getting murdered. Probably.
  • Murasakibara. His expressions and his attitude are both...unsettling.
  • Akashi. Everything about Akashi. Memorably the scissor scene, where he was straight up intending to take a chunk out of Kagami and would've succeeded if not for Kagami's reflexes. So much for nobody getting murdered.
  • Hanamiya "Bad boy" Makoto gets at least an honorable mention, as Hope Crusher extraordinaire. He puts Teppei out of commission once and is no less ruthless during their next match.
http://tvtropes.org/pmwiki/pmwiki.php/NightmareFuel/KurokoNoBasuke