giyuu was your older brother, but unfortunately, your sibling relationship was just like sanemi and genya's

he would always deny he had a younger sibling, which broke your heart a lot, but you stayed strong

one day, on his day off, you asked him to make pizza with you, which he hesitates but accept later on "so.. How do I make pizza exactly?" he said looking annoyed while staring at you and the ingredients on the table