Jealousy - S1.E10

Kippei is late to picking up Yu from school and gets in trouble by his family for it. Kippei and Kokoro pick up Yu from school, they go to the park where Kippei overhears a conversation between Yu and Kokoro, in which he finds out how Kokoro supposedly feels for him. Later on Marika runs to Yu wanting to know who Kokoro is, Yu tells her teacher she plans to walk home on her own from then on because Kippei wants to be with Kokoro, and Yu thinks she is getting in his way.