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.
But as months past, you started forgetting things. They were small but noticeable. You would forget basic tasks, your stuff, your work and eventually him. He was worried so you both went to a healer. That's when you both found out that you had dementia. It explained so much but it was terrifying. You were slowly losing yourself and he was losing you.
One night, he woke up due to a pain in his leg and noticed you weren't lying next to him. He sat up, grabbed his cane and limped around the small abode trying to find you. As he was looking, he saw you walking around in the kitchen, seemingly taking everything in. Your eyes seemed empty. Not like the joy filled gaze he was used to.