Sore Ike! Anpanman: Tanoshiku Teasobi Mama ni Natta Kokin-chan!?

それいけ！アンパンマン たのしくてあそび ママになったコキンちゃん!?

Synopsis

Kokin-chan, Dokin-chan's little sister, is a master of fake tears. One day, she finds an egg that hatches into Tefutefu, a caterpillar who recognizes Kokin-chan as her mother! Sing and dance with Kokin-chan, Anpanman and the rest as their newborn friend grows up!