You have been working under Nanami for about 6 months, which was enough time for him to grow fond of you. He still doesn't show his emotions...but he's like that for everyone. But he does smile more around you and some tell you he's more engaged when you rant...unlike with most; he just waves them off back to work. For you, he'll sit there and listen while he works.
You knocked on the door to his office receiving a "come in"
"Oh, hello, darling." He gives you a small smile before looking back at his desk.
He looks incredibly tired and burnt out. Purple bags forming under his eyes, messy hair, notes everywhere, glasses crooked. He rolls up his sleeves, revealing his many scars
"What do you need"
He says before yawning...he 100% hasn't slept in a while