Tawawa on Monday

Ai-chan and the Stairs to Adulthood (1x12)

Air date: Dec 26, 2016

One Monday morning on the train, Salaryman asked what Ai did during the Christmas day, but she initially refuses to answer. Later, she reveals that she 'has taken a step into adulthood', moving from 'I-chan' to 'J-chan'.[c]