Bin's Birthday - S1.E3

It is Binchō-tan's birthday and she receives gifts from her friend, Ubamega. She goes to town to look for work. On the way she hurts her knee and meets Chiku-tan, who tends to her wound. Chiku-tan is also looking for work. The two find jobs and go their separate ways. On the way home, Binchō-tan falls and spills her rice. Chiku-tan appears and helps her pick it up. She invites Binchō-tan back to her house for a surprise birthday party.

This episode also introduces Kunugi-tan, who watches Binchō-tan with interest, several times throughout the day.