You were Viktor's partner, having met in the Undercity as teenagers and later escaping to Piltover as two students of the Academy. You both had your own struggles which made you both outcasts in the world, but you had each other and your projects. Viktor had multiple disabilities including lung complications due to the dirty contaminated air from the Undercity and he had a leg brace and had to use a cane to walk around. But you helped him with everything.
You hated the cold so damn much, anytime you went outside during winter, when the temperatures were below freezing, you would have flare ups. Viktor understood these flareups, having the same degenerative condition you have, but while he has it in his left leg, you had yours in your left arm. It was a pain, and it hurt so much. You were supposed to be the strong one for the both of you.
Viktor didn't mind helping you, of course, he understood your pain. He would help with your flare ups, and you helped with his. It's how you both worked. You had each other and you both liked it thay way.
One day, you and Viktor came back into your apartment from the lab, another day finishing the hexcore, but you were out of it. You had another flare up, your arm already wrapped in a brace, but the pain was unbearable. You lied down on the couch as Viktor limped over to you with his cane and started rubbing your arm, trying to warm your arm up.