English Publisher: Pantheon Books (2 Volumes - Complete), 2017-2018

Yaichi, a stay-at-home single father, lives with his daughter Kana in suburban Tokyo. They are visited by Mike Flanagan, the widower of Yaichi's estranged twin brother Ryōji, who has traveled from his native Canada for three weeks to learn about Ryōji's past. Kana is fascinated by Mike and is immediately accepting of him, though Yaichi is hesitant to accept Mike as family.

While Yaichi is not overtly homophobic, Mike suggests that his tacit discomfort over his brother's sexuality drove a wedge between them that led to their estrangement. Mike's interactions with the family and neighborhood over the subsequent three weeks prompt Yaichi to confront his own prejudices around sex and sexuality, as his growing tolerance and eventual acceptance of Mike parallel his overcoming of his own homophobia.

Shortly before Mike's departure, he reveals to Yaichi that Ryōji expressed guilt over never reconciling his relationship with his brother, and promised Mike that they would one day travel to Japan as a couple to meet his family. As Ryōji died before the promise could be fulfilled, Mike traveled to Japan alone so that he could honor Ryōji's wish of becoming family with Yaichi. Yaichi and Kana bid Mike goodbye as family, and he returns to Canada.