Jinyoung and Park Sung Woong did an amazing job with their parts, especially Jinyoung as he played the older man in a teenager's body. There were many, many laugh out loud moments. The supporting cast was very good as well. I loved the ending, it was very cute and ultimately the movie was about family, loyalty and redemption. I scored down only due to the excessive amount of bullying (though I realize it was necessary, for the most part) and the cursing - I mean, when you translate, couldn't you use different words than curse words?!