Pokemon, C: The Money of Soul and Possibility Control Recommendations
Same vibes where the main characters are very similar. Although the premise of [C] might be dark, it's actually full of hope just like Pokemon. The main character Yoga is like Ash in a lot of ways. He also has a pokemon, in which it is termed as an "asset" in the world of [C]. Msyu is the said asset, who acts just like the pokemon Pikachu. Pikachu though the cuddly and cute-looking one, is actually the one who has a deeper and more human-like personalities than the humanoid Msyu. Both are very DEEP.
I think both of these anime are similar. because in both the anime the characters duel by using creatures/monsters or of that kind. and both the protagonists give the same vibe.