The Lord of the Ring.Nagasumi takes Sun on their first date at the Bon festival, however, not only is Sun's father keeping a very close eye on them, most of the stalls are operated by members of the Seto gang and Nagasumi is almost devoured by gang member Shark Fujishiro. Nagasumi learns from experience that Sun's legs revert to a mermaid tail upon contact with water and must hurry to dry her off before her secret is revealed. This comes with its own risks as Sun's father misunderstands Nagasumi's intentions and almost beheads him. Wanting to do something nice for Sun Nagasumi buys her a glass ring she happily wears on her ring finger. After seeing how happy the ring made her Nagasumi decides to begin taking his relationship with Sun seriously as her future husband.