This is the character design complete file, including sketch and some accessory details.

Shin:

He’s one hell of a boy with motto ‘Being Different’. When I say being different, means ABSOLUTELY different. He use any ‘Things’ out of ordinary to be put as accessory just to make other paid attention to him, which not always worked.
He modified his nerdy glasses with his headphone, decorated with pilot-goggle-leather like on the side . He use wall decoration mask for accessory in his hands. He creates his own favorite jacket with zipper in most part (not that it useful in life).
When he found out he’s into Reaper’s game, he’s nothing except being excited. He put his unique taste to maximum extend, thinking he was the ‘chosen one’. But he’s not even got slightest clue about what going to happen to him….in the next 5 minutes… from this very scene.

*sometimes he should understand that life is not just about the” game”…it also about stakes*