The foreign organ

Nikun suddenly remembered Naomi when Shea was asking Aaron about her chances of survival under Doctor Wells who works at the neurology department in Rivas Hospitals.

Aware that Aaron had sent Naomi to the police station, he asked in curiosity, "Where is Naomi Fisher? What did you do, Aarvi?" Since she had told Aaron she would handle Naomi, he wished to know how ruthless she is.

Shea, who knew Naomi for a year in country S, asked without understanding what is going on, "What happened to Sister Naomi?" She asked but stopped them from speaking, "Wait…" She raised her hands at her brother and Aaron.

"Brother Aaron got Aarvi as soon as he returned to the country. So Sister Naomi still has the unrequited feelings." 

She hadn't told anything about Cupcake to Naomi to avoid hurting her and she thought Naomi could change Aaron's heart. Likewise, she avoided speaking about Naomi with Aaron because he wanted nobody but his Cupcake.