电影《继母的妹妹》是由韩国导演Kim Min-sik执导，主演为日本演员Asano 和水原佐奈（Mizuhara Sosuke）。该剧情片于2017年9月7日在韩国上映。影片以细腻的故事情节和感人的表演，讲述了一段寻觅承诺的感人旅程。

影片的故事发生在一个美丽的小城镇，背景交织着韩国和日本的文化。男主角（由asano饰演）是一位失去记忆的旅行者，他携带着迷失的过去来到这个小城镇。与此同时，女主角（由水原佐奈饰演）是一名善良又坚强的当地居民，她经营着一家古老的咖啡馆。两人在偶然的机会下相遇，开启了一段让人动容的缘分。

男主角渐渐发现自己的记忆空白处，他迷茫地游走在小镇的街道上，寻找着遗失的自己。而女主角则陪伴着他，用心聆听他内心的声音，并默默支持着他的探寻。两人之间渐生的情感，没有大言不惭的宣泄，而是以微妙的表情和心灵的交流来传递。

The movie "Stepmother's Sister" is directed by Korean director Kim Min-sik, starring Japanese actors Asano and Mizuhara Sosuke. The drama was released in South Korea on September 7, 2017. With a delicate storyline and touching performances, the film tells a touching journey in search of promises.

The story of the film takes place in a beautiful small town with Korean and Japanese culture intertwined in the background. The male lead (played by Asano) is a traveler who has lost his memory and came to this small town with his lost past. Meanwhile, the heroine (played by Mizuhara Sana) is a kind and strong local resident who runs an old cafe. The two met by chance and opened up a touching fate.

The male protagonist gradually finds a blank space in his memory, he wanders in the streets of the small town in confusion, looking for his lost self . The heroine accompanied him, listened to his inner voice, and silently supported his exploration. The growing emotion between the two is not vented brazenly, but conveyed through subtle expressions and spiritual communication.