Who's Emilia?

A young man with dark hair looks down with a strained expression, then the scene cuts to a young woman with pink hair looking up with a worried expression, followed by a wide shot of a young man in a black and white uniform standing on a stone structure overlooking a glowing green portal with a small figure inside, then a close-up of a young man with spiky black hair looking up in shock, then a close-up of a young woman with blue hair and a pink ribbon looking up with a tear in her eye, and finally a close-up of the young man with dark hair looking up with a shocked expression as a hand reache