ข้อมูลอนิเมะAishiteruze Baby★★

Kippei Katakura is the handsome playboy of the school. After ditching school to play around with a girl on the roof, his friends ask him to go play around. However, he received a phone call, telling him to go home right away. His 5 year old cousin, Yuzuyu, is staying with him, and he is the one in charge of taking care of her.

Kippei makes onigiri for Yuzuyu to take with her. He isn't very good at making it and when a boy laughs at her because of the funny looking onigiri she slaps him. Kippei tries to find out what is wrong.

Yuzu is becoming some-what of an outcast at school, because she is motherless. She has Kippei though, so she'll be okay, but what happens when a seriously Kippei-crazed girl shows up?

Yuzu is left alone and Kippei's stalker comes up and talks to her. Stalker says that everybody hates her and throws away Yuzu's crayons! Now Yuzu, feeling very insecure, tries everything she can to keep Kippei by her side.

Yuzuyu is asleep for the night. Kippei is still thinking about why Yuzuyu wouldn't tell him what happened to her crayons. The next morning Kippei promised to pick up Yuzuyu right after school. On the way he runs into this old lady that needs help with directions. While Yuzuyu's waiting the girl who got rid of her crayons comes to pick on her some more. Will Kippei make it in time?

At school today Yuzuyu is playing in the sand. Her classmate, Marika, comes by and says that Yuzuyu is a show off, because her uniform is different than everyone else. Reiko and Kippei to the store and buy her a new uniform that matches. Will she wear it?

The preschool's having an athletic competition.

A letter is received from Sakamoto Miyako, Yu's mother, Kippei's family stating she still isn't coming home, along with that letter there is one for Yu as well. Kippei gives the letter to Yu without looking at it, leaving him curious as to what it says. Class seats are changed and Kippei ends up sitting next to Kokoro. A large portion of the episode revolves around Yu's stuffed bear and the memories surrounding it between her and her mother.

Kokoro is going to live alone in a luxurious apartment. When Kippei and Yu are returning home from the market they saw Kokoro living alone. At the end of the episode, Kippei knows everything about Kokoro and they kiss.