Mirai

Plot: Kun is a young boy who lives happily with his mom, dad and dog. That is, until one day, when his mother returns with Mirai, a young baby girl. Kun's mom's attention shifts to Mirai while dad has to take care of Kun and the household. Chaos ensues as everyone tries to get used to the new situation, but Kun can't get past the feeling that his parents have abandoned him. Every time he acts out though, he is given a glimpse into the lives of his family members, allowing him to better understand his place and responsibility as part of their family unit.