While both Nine and Twelve had grown up in that cursed academy, had faced the same horrors, it had left a different mark on each of them. Nine was rigid in his plans, in his beliefs. He knew what he wanted and he knew how he was going to get it. He was solid, a steady rock that kept his eyes on the prize.
Twelve was an entirely different creature. He was malleable able to fit any mold. Creepy kid, intimidating terrorist, eccentric student, all those roles flowed together, weaving themselves into him. He was whatever was needed of Nine, partner, friend, or brother.
But while Nine was Twelve's reliable rock, he was almost extraterrestrial in his acting. From the start he knew he was living on borrowed time, so he tried to live a life with as little attachments as possible.
Twelve meanwhile was fascinated with the third planet from the sun. So many people, so many lives, so many stories each held. While Twelve was detached as well from "normal life" He strived to fit in as much as he could. A gentle smile, a friendly laugh, a silly joke, he adopted all these things to feel a bit more human.
In that way he grounded Nine. Kept him from being lost in his own dark mind. While Twelve himself felt like an alien, he did his best to make sure Nine was comfortable in their visit they knew would end soon.
He doesn't know why Lisa Mishima caught his eye. There were so many reasons but Twelve thought it came down to the fact she seemed foreign to this world as well. And adaptive Twelve, malleable Twelve was so eager to fit her into their family. For while Twelve grounded Nine, Lisa grounded him, making him feel more attached to this crazy earth. For once he felt like he wasn't some sick parasite, but an equal inhabitant.
And it was such a short time, but Twelve didn't regret a second of his time spent falling in love with this blue planet. His only regret was leaving Nine in his quest for home. But God, Twelve didn't think he was happier than when Nine finally tried to bend as he did.
It wasn't even 24 hours, but time spent just enjoying life with Nine and Lisa was a slice of heaven itself. While soon Twelve did finally depart from this earth later, Twelve held no regrets.
He the alien had fallen in love. In love with Mother Earth and her children. And while his vision started to dim, a small smile slipped across his face.
He made not have survived long, but he had lived more than he believed an invisible ghost could ever had. And for that he would think Lisa Mishima as long as he could.