18-year-old Yuto lives next door to the married woman Tsubaki Mizuno. Their houses are so close together that they often talk to each other through the window. To Tsubaki, Yuto is just a kid. Yuto, on the other hand, is secretly aroused by the sight of her voluptuous body. One day… Yuto's patience reaches its limit when he sees her skimpy clothes. Tsubaki is surprised by his big cock, but she uses her mouth to suck him off.

"Just this one time..."

After that, Yuto can't stop thinking about her mouth. One day, he hears her moaning from next door…

"Don't look at me like that… Yuto…"

The next day, Yuto takes advantage of Tsubaki's guilt and forcefully takes her lips and crosses the line with her. Tsubaki tells herself that it's just this once, but she can't forget her feelings for young Yuto and his body…

(Source: Melonbooks, translated)

Note: Released at Comicket 103.