Wait a tick, Shige's house is a car ride away, and the mountain a longer car ride from Sei's house. The incline up through the mountain trail to the summit is pretty steep, too steep for Shige in his condition, and while there's a thick layer of snow. Also, how the Hell did he get there without his parents realizing he was gone? Are we expected to believe that he, in his mental and physical state, was able to sneak out his house undetected? Testing my suspension of disbelief here...Lemme guess, all just a dream?