She doesn't know him like the world knows of him.
She knows him as Takahiro-kun, the man who's helping her get back on her feet. She doesn't know about Taka the ONE OK ROCK vocalist, and Taka is determined to keep it that way. He's content with their simple moments together.
Or that time when Taka found a bloodied, lingerie wearing, free loader in their tour bus. (Taka x OC)
"'Fess up. Who used my bunk without even at least changing the sheets?" Kakashi asks calmly but his eyes boiled with anger.
Or Kakashi bans his male band mates from coming lest they pay fifty thousand ryo. Modern AU. Band Tour AU. Open ended oneshot?