The controversy involving Kim Soo Hyun and the late Kim Sae Ron has escalated with Garo Sero Research Institute threatening to release damaging material unless he issues an apology. Allegations state their relationship began when she was a minor, leading to a national petition for accountability.The controversy involving Kim Soo Hyun and the late Kim Sae Ron has escalated with Garo Sero Research Institute threatening to release damaging material unless he issues an apology. Allegations state their relationship began when she was a minor, leading to a national petition for accountability.