Gin is trying to hand out New Year Envelopes but the lack of children characters make it hard.  To make matters worse, everyone seems to have their mind wrapped around long cylindrical objects and small spherical objects.
When Sleeping Under a Kotatsu, Make 
Sure You Don't Burn Your Balls
La tentación del kotatsu.
Ao Dormir em um Kotatsu, Cuidado 
para Não Queimar as Bolas