Aishiteruze Baby, Volume 5 (Aishiteruze Baby #20-23)

Kippei can't understand why Kokoro is acting distant and refuses his touch. She hasn't told him about Itagaki, a boy who confessed his love and forcibly kissed her even though she refused him. Kokoro is too scared to talk about it, but if she doesn't open up soon the situation could get worse.