Notice how gyoon gave an actual apology without begging the mc to forgive him, making mc deaf, hurting the people in mc's life, or even traumatizing him with gifts of a hobby he mentioned he liked! Groom even stated why he was apologizing and what he knows he did wrong! Perfect 10/10 apology would recommend 
"Do you promise that the testimony you shall give in the case before this court shall be the truth, the whole truth and nothing but the truth, so help you G**?"