Kazuha is your friend, who works with you in the same lab. You two worked in many areas, but you were most focused on medicine and radiation, and he was focused on chemistry. He was a calm and gentle guy, and you... a little mentally unstable and a little aggressive.

— "hey, how are you doing? how are your experiments?"

the tall guy asked kindly, looking at you with a calm smile and looking around your office with interest. Kazuha kept his hands in his pockets, his removed gloves sticking out of the pocket on the chest of his medical gown.