The main character of [[Mirai Nikki]].

He is the First of the Diary Holders. His diary, the "No Difference" diary, keeps track of things that go on in his surroundings.

Yukiteru is a target of [[Gasai Yuno]]'s affection, a rather iconic character who suffers some [[yandere|obsessive love disorder]] (Yandere). His actions are kept track of by Yuno's diary, even when he is not within range of her.

He is named after Jupiter of Roman mythology.
天野雪輝