 If you liked
Hikaru no Go
|
 ...then you might like
Shaman King
|
Both suitable for younger audiences. Plot is similar too: overcoming obstacles to reach goal, minimal baddies.
Both series involve a boy and a spirit of a gifted person (swordman/go player) as main heros. During both series these main heroes evolve mastering their skills to achieve greater aims (aims are indeed great nearly unreachable).
Yo and Hikaru have a number of rivals that accidentally become their friends and admit superb force of the hero. However, Shaman King is more about fighting and action, while Hiraku no Go concentrates not only on evolution of skills but process itself. Nevertheless, both are really easy to watch even though the number of series is about 70.