The particle へ is a direction marker in Japanese, meaning "to" or "toward." It is used to indicate the destination or direction of movement and is typically used with verbs of motion like いく行く (to go), くる来る (to come), or かえる帰る (to return).
Direction
Marks the direction toward which an action is directed. Unlike に, which can indicate both destination and existence, へ focuses solely on the movement toward a place.
When used with verbs of motion, へ emphasizes the process of moving toward the destination, rather than simply arriving there.
Abstract directions
Can also be used to indicate metaphorical or abstract directions.
While へ and に can both mark destinations, へ focuses more on the direction or movement, whereas に can include arrival, purpose, or other nuances.