Episode 4 begins with Konoha Akisato returning to Alcohol Soft, where she learns that the programmer Mamoru is still missing. Determined to bring him back, she sets up camp outside his apartment. Despite her excitement, she falls asleep and Mamoru escapes.

Meanwhile, the team at Alcohol Soft grows increasingly restless. They discuss the need to switch to Windows for their next game but also acknowledge that Mamoru’s PC-98 expertise is invaluable. Kaori, the president, remains optimistic that Mamoru will return.

Konoha meets Toya Yamada, a young man she’s encountered before, and they eat together. Toya shares his love for bishoujo games and how they’re becoming more mainstream. Konoha encourages him and hints at the future of the genre, with various bonuses and extras included with the games.

Back at Mamoru’s apartment, Konoha wakes up and realizes Mamoru is gone. She returns to Alcohol Soft feeling dejected. Just as all hope seems lost, Mamoru appears in a PC-98 costume. He agrees to return to the company but insists on developing both a Windows version and a PC-98 version of their next game.

The episode ends with the successful completion of the game and the team’s participation in Comiket, a comic convention. Konoha shares her future artwork with the team, and Mamoru repairs her tablet from the future. The episode concludes with Konoha mysteriously disappearing, leaving Mamoru to ponder their next game.