Yamawaki and
Iwata
know
each
other
at
the
gym.
Yamawaki
is
depressed
and
asks
Iwata
for
advice.
Yamawaki
can’t
come
home
after
a
fight
with
his
wife，
so
he
stays
at
Iwata’s
house
for
the
weekend.
At
Iwata’s
house，
there
is
a
roommate
named
Hayato.
・・