Darkrai was alone. He was hated,rejected,and had no friends. He was even forgotten. Darkrai sat in his dark cave on Newmoon Island. He was reflecting on his past,deciding whether or not to just end it all. Darkrai ends up sleeping but has a nightmare.
Cresselia on the other hand,she was living a good life. She had great friends,and was cheerful in every way. Cresselia was a well respected Pokémon.
She didn't really seem to care for Darkrai,but the thought of him surfaced in her mind every so often. She had no idea why,but she sensed a great amount of depression coming from him. Cresselia eventually shook off those thoughts. Darkrai can't possibly be depressed right?
3 Months Later...
Darkrai got into a huge fight with the likes of Mewtwo,Rayquaza,Zygarde,Kyurem,and Dialga. They had been trying to get rid of Darkrai,kill him if they had to. Darkrai just barely escaped. He managed to knock down Zygarde and Dialga. But Mewtwo,Rayquaza and Kyurem hit him with their strongest moves and Darkrai clang on to a thread of life. Enough stamina to pull Dark Void.
On Newmoon Island, he laid in a clearing. Accepting his fate. He was slowly fading away. Blood coming from his gashes and large cuts.
Cresselia sense her counterpart fading. She rushed to his island to see if she could help. Cresselia was the only legendary that actually thought about him.
She found him in the clearing. Darkrai was bleeding out from his injuries.
"Darkrai...what happened?" Cresselia tried using Moonlight, but it had no effect.
"What do you care? No one has cared about me. Let me pass in peace please..."Darkrai softly begged for her to leave him.
"No! I'm not leaving you! I could help you recover fast!" Cresselia was sweating because of the situation .
"I don't think there's enough time... I'm losing consciousness. It is only-" Cresselia cut him off.
"Darkrai... I don't know how to put this...but i found out that i cared about you..."Cresselia was sobbing on his chest.
"Cresselia... It's too late for feelings... It's my time now. Goodbye Cresselia..."
Darkrai then faded away in Cresselia's arms. For Cresselia, It was a depressing night. For the other Pokémon, It is a Glorious Night.