Reborn as a Vending Machine, I Now Wander the Dungeon, Vol. 1 (light novel)

After dying in a traffic accident, I find myself standing near an unfamiliar lake. My body won''t move, I can''t hear my voice, and when I try to shout in confusion, words that I never expected come out!"Get one free with a winner."-it seems I''ve turned into a vending machine...! I can only do what actual vending machines can. It''s impossible to move by myself, and there''s no way for me to have any meaningful conversation-how am I going to survive some fantasy world''s dungeon like this?!