"Uhh, Setsuna-chan?"
Setsuna seemed to be lost in thought, but quickly snapped back to reality once she processed Kasumi's words.
"Yes, Kasumi-chan?"
"Oh, nothing, you just looked a bit out of it for a moment. You good?"
Setsuna tapped Kasumi on the shoulder playfully as she grabbed her bag and headed for the door.
"Yeah, I'm fine. That chocolate was delicious by the way. Much appreciated!" Despite her feelings prior, Kasumi suddenly found herself wanting Setsuna to stay for a while longer. She was unable to look away from the beautiful school idol as she headed towards the club room's exit.
"I'll see you later, I'm off~!"
As Setsuna walked out of the room, her long blueish-gray hair flowed, allowing Kasumi to catch a hint of its lovely scent.
"W-why does her hair smell so good? And Why am I noticing something like that??" Kasumi thought. Looking on the floor, Kasumi saw an item not previously there. It was one of Setsuna's worn thigh highs. It must have fell out of her bag when she put it down earlier.
"Ah, w-wait!" Kasumi reached her arm out, but it was too late. Setsuna had left, leaving Kasumi once again alone in the club room. "You forgot you... Sigh, I'll give it to her later I guess."
Picking up the used legwear, Kasumi worried about any lingering scent. She didn't want to get a whiff of any girl's used clothing. But oddly enough, Setsuna's lone thigh high sock didn't smell bad at all... It kinda smelled... good?
It's not as if the odor itself changed. Kasumi could tell it smelled like a sweaty, dirty sock, but her perception of that smell had somehow changed. A moment later, Kasumi realized she was putting it up to her nose and breathing in every inch of the smelly sock.
"W-what am I doing!? And why can't I stop!? Holy crap this smells good..." Kasumi panicked internally. Her thoughts were suddenly filled with nothing but Setsuna.
Kasumi threw the thigh high on the ground in fear of what she was doing. But not even a few seconds later, she picked it up again, took another whiff, and stuffed it in her skirt pocket. Kasumi got up from her seat, and left the room. She had to see Setsuna. Kasumi knew something was wrong, but right now, she just wanted to be in her presence.