1x11 - Aishiteruze Baby

Kippei goes looking for Yu who went to walk home alone. Yu ends up following a puppy and decides to help the puppy look for its mother. Kippei calls his family to report he hasn't found her and they set out to search, close to nightfall. Eventually he runs right into Kokoro rounding a corner, he tells her Yu disappeared, and she helps him look for her. Yu realizes she doesn't know where she is and gets scared. He finds her late at night and she still claims to be able to get home alone. After a short talk he learns why she has been acting like she has. Kippei and Kokoro break up and Kippei picks up the suddenly bashful Yu.