Answer:
Boruto inherited Jougan because of his blood line from Hinata ang Naruto, not because Toneri or someone mysteriously gave him the eye. It means Boruto is destined to help the world and prevent it falling to the darkness. His eye is his mean to purify the darkness which threatening the world.
Boruto's dojutuso, Jougan is exclusive to Boruto, Jougan is a dojutso born with his parent's DNA, the Jougan is light blue in color from his mother hinata's white byakugan eyes and his father naruto's blue eye which makes the Jougan light blue color with a barely visible blue pupil from naruto's eye.
Explanation:
;)
