Looking for Japanese anime! I want it to be good-looking and have about 24 episodes.

Well, I recommend a few that I think are pretty good. Of course, I would be sorry if any of you have read them. This is just what I personally think looks better. Hope this helps. (The ones added with ★ are in full compliance with the original poster’s requirements)

1. The grandson of the slippery ghost (Ⅰ, Ⅱ-Thousand-year Demonic Capital)

2.Fate/Zero

★3. Blue Exorcist

4. My sister can’t be that cute

★5. Guilty Crown

6. The world’s best first love (Ⅰ, Ⅱ)

7. Demon Fox X Servant SS

★8.Angel Beast!

9. The rebellious Lelouch

★10. The girl with light tone (Ⅰ, Ⅱ, theatrical version)

★11. I really want to tell you ( Ⅰ, Ⅱ)

★ 12. The Story of Flowers

★ 13. Idiot·Test·Summoned Beast (Ⅰ, Ⅱ)

14. The Story of Flowers

★15.Another

16. Listen to daddy

17. Puella Magi Madoka Magica

18.GOSICK

★19. Steins;Gate

★20. I have few friends

21. Spice and Wolf (I, II)