It's New Year's Eve, and the Defense Club members are gathered at the Kurotama Bath, fighting over the TV and cozying up at the kotatsu with their usual leisurely air. Although they expected to go their separate ways after eating Gora's home-made soba, the area directly around the Kurotama Bath is suddenly hit by a blizzard, which cuts them off from the outside world! How will the club react to this disaster situation?!
They make our hearts feel 
like warm and toasty spring.
Sie erwecken den kuschligen
Frühling in jedermanns Herz.
Calientan nuestros corazones
como la primavera.
Calentáis nuestros corazones
como la primavera.
ils apportent la chaleur printanière
dans le cœur des gens.
Fanno provare il calduccio della primavera
ai cuori delle persone.
Eles fazem nossos corações ficarem 
 aquecidos e celebrar como a primavera.