Keisuke works at a Chinese restaurant near a train station and is attracted to sophisticated-looking salarymen passing by their shop. One rainy night, his co-worker encouraged him to offer an umbrella to an office worker seeking shelter under an overpass. To his surprise, the office worker was crying. Keisuke learned that Yukifumi, the office worker, had been abandoned by his partner who was already married while their affair lasted for seven years. Yukifumi was waiting under the overpass in hopes of someone else coming along to help him. Seeing an opportunity, Keisuke offered himself to Yukifumi. However, things became complicated when Utsugi, Yukifumis ex-lover, showed up the next day.
Lonely Playground was published digitally in English by Fantasista Inc. through futekiya from January 25 to February 6, 2021.