 If you liked
Kaiba
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 ...then you might like
Ping Pong the Animation
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Both shows have the same director in Yuasa Masaaki. Kaiba is an original anime written by Masaaki whereas Ping Pong is adapting source material by Taiyou Matsumoto. The shows are very different in terms of what they are actually about, but if you like the visuals in Ping Pong or Kaiba then you would definitely appreciate the other. I get more "Kaiba-vibes" from Ping Pong than I do Kaiba's sibling, The Tatami Galaxy, in terms of aesthetics, and especially when Smile is "Entering the Hero".
Drama about main character finding their self (also literally in Kaiba), encountering other people and their story also unveils. Both directed by the same director and both have easthetically pleasing experimental animation and artstyle. While the story itself might be different, if you enjoyed one of those you should certainly give the other one a try.