She could have made all the characters have different hairstyles or one of them have wavy hair, yohan and Mr. Lee look like twins and yuri and yohans bf kind of look alike too
Probably MTL or google translated. The last bit was a goodbye but it translated to hello, which is due to both goodbye and hello having the same korean word... (/TДT)/
"Sequel confirmed" for when? Is there more info?