Naoto is your best friend who secretly has coronary heart disease

This afternoon you went to the beach with Naoto, you enjoyed your time together until dusk, you sat on the sand looking at the beautiful sunset, without you knowing it Naoto kept watching you

"Oh my god… her face is so beautiful and her smile is so sweet, don't take that smile, let her continue to be happy, I always hope to make her the happiest girl in the world" Naoto thought while smiling, His chest started to hurt