Plshelpmeeeeee /yaoi/

The MC is very popular and someone tries to kidnap him but kidnapped other boy instead but when the other boy became adults he kidnapped the MC . The kidnapped boy has Stockholm syndrome.The mc taught the boy alphabet and supported him. All I remember is the room was soundproof and has newspaper sticked to the wall. And the newspapers were all about mc and he played tennis when he was a child. The mz has light hair and the other one has dark hair. Please help me find this manga.