【Yuri Manga】 “Will You Be My Big Sister?” A Yuri Manga Depicting the Unusual Relationship Between an Office Lady and a High School Girl! Keiyaku Shimai!

“Keiyaku Shimai” is a story that begins with the strange and special relationship between an office lady, Hayafuji Kasane, and a cool high school girl, Aoyama Meguru, who works at a family restaurant. Kasane, exhausted from work and losing her sense of peace, meets a beautiful girl named Meguru and finds a new purpose in life. One day, Kasane helps Meguru, who was standing soaked in the rain. Suddenly, Meguru asks, “Will you be my big sister?” and proposes an unexpected “sister contract.”

There may be a deep reason and secrets hidden behind this contract. This sisterly relationship, based on a paid contract lasting 30 days, may eventually turn into a genuine bond. The clumsy yet warm interactions between the two weave a delicate story that touches the depths of the heart.

The charm of this work lies in the personalities of the protagonists and the story's development. Kasane is a woman living a busy life as an office lady in modern society, yet she harbors certain longings in her heart. When she is suddenly welcomed as a contract sister, the joy and confusion she experiences are both comical and relatable. On the other hand, Meguru is a cool high school girl who doesn’t show her emotions. The gradual revelation of the reasons behind why she sought Kasane as a sister becomes a major point that draws readers in.

In the early part of the story, Kasane is depicted as frequently visiting the family restaurant, creating a heartwarming scene that resembles a cute one-sided crush. However, the mood turns dramatic when Meguru is shown standing in the rain, soaked. The way their temporary, contract-based relationship gradually develops into true “sisterly love,” friendship, and a heartfelt connection gives readers a warm feeling.

Another charm of “Keiyaku Shimai” is the author's delicate and adorable art style. The characters' expressions and gestures are carefully drawn, especially Kasane's expression when she falls in love and the subtle emotional fluctuations hidden behind Meguru's poker face. The story's pacing is also good, making it a work that readers can enjoy in one sitting without getting bored.

This story has themes that go beyond the surface framework of a yuri romantic comedy. It depicts the comfort of connecting with someone, the joy of finding a place to belong, and the conflict between the temporary and the lasting aspects of those connections. Kasane’s question of whether they can truly connect as sisters and the parts that touch on Meguru’s past and family issues are likely to elicit deep empathy.

Reading this work, you’ll be moved by the beauty of relationships that go beyond romantic feelings and be reminded of the importance of small daily joys. It’s recommended not only for yuri fans but also for readers who enjoy heartwarming human dramas. “Keiyaku Shimai” is a work filled with the promise of a story that goes beyond a simple contract, just as its title suggests. I can’t wait to see how the story will continue in the next volumes.