Groups of kids get stuck in another dimension of death and darkness well they all live through it with the new members or all parish and lose to the dimension?

One day Nagisa finally noticed why his heart was racing so fast when he walked near Karma,or tried to look into his eyes,why his voice was stuttering when he talked with his best friend? Does he have feelings for him? Warning This story is yaoi It has lemoney stuff in it Don't like boy x boy? Don't read