>>46265887At the climax of the team galactic plot, at the top of Mt. Coronet and before Cyrus summons the respective cover legendary Arceus breaks through the clouds and descends toward the player.
From there Arceus starts babbling about how he's about have his first date with his crush, Giratina and he's worried about Giratina's big and intimidating father, Eternatus.
Arceus then demands that the player and Cyrus act as his backups as he introduces himself to Eternatus. After the introductions the player finds out that Eternatus isn't really angry and mean, just lonely and scared about his daughter growing up. Eventually things start heating up and some crude and lewd actions occur, at the end an egg appears and is given to the player which eventually pops out the respective cover legendary. Arceus and Giratina live happily ever after and the player attends their wedding in postgame, though no-one really knows what happened to Cyrus...