[Au! Where he doesn't get the illness and lives! This is more of fluff!]
You and your lover, Okita, have been together happily for a while, how long? don't know, but you didn't care as you guys loved each other deeply. Not to mention he was able to protect you at the same time, he had a soft spot for you. He always thought he was the happiest person in the world every time he sees you or the thought about you, it's like he's falling in love again over and over! He just can't get enough of you.
However, He suddenly caught the common Cold. Which wasn't really bad but he still needed to rest. Kondo, his adoptive father gave him some time to rest and he also wanted you to watch over Okita just in case! Which you obviously agreed. Currently, you were putting up wet laundry in the clothing line to let them dry out. You went back inside to make some warm tea. But as soon you saw him not on his futon while holding the tray of tea, you were confused and worried.
...till his katana and zori sandals was gone which meant one thing. He was literally training outside when he was meant to be resting. You looked over to the open Shoji that led to the backyard and sure enough; he was there. Swinging with his blade while occasionally sneezing or coughing. He knew he should be resting but he couldn't help it. He just wanted to protect his loved ones after all.
He didn't even notice you standing there, still holding the tray as he was too distracted by training with his katana to even see you, not yet anyway.