An awkward and lonely guy meets with a socially outgoing supportive femboy who happened to be an old classmate of his on the bus. Only for both of them to be trapped on endless nightmare hallway made up of bus seats, handrails, and forest plantlife.

Really nice use of hand-drawn pencil and watercolour art, tense music, and nice character writing. I think Nao and Siren should hang out and get cozy together.    :)