Nova/Bullet Game

Nova is the main antagonist of Bullet Game who threatens to break the Time Pendulum.

Role
After defeating Nova, he laments on how he just wants Innocence back and how he would do anything to make that possible. The player now has two options -- to comfort Nova or to leave him. Comforting him will progress towards the Good End and trigger the fight with Corrupted Galaxia, while not comforting him will lead to the game's credits after the player walks away.

Good End
In the Good End, the player hugs Nova and Nova hugs the player back. After the player and Nova's sprites back away, Galaxia comes in and puts on the dropped Metal Fists, triggering the fight with Corrupted Galaxia. Nova is only seen again after the fight at the beginning section of the game on a previously unseen spot with red roses in a pile, speechless.

Trivia

 * The scene in the Good End where Nova hugs the player back is one of the only times where Nova is seen being honestly kind.