Nikita Shindo is a devoted otaku who lives for bishoujo games and the culture of Akihabara. After joining a hardcore trivia club and meeting the alluring Tamaye, Nikita's fantasies begin to blur with reality when he encounters a girl who resembles his favorite heroine. His luck peaks when he accidentally crosses paths with Tetsuko Misaki, a voice actress who recruits him to help her practice intimate scenes for her latest role, leading to a surprising and steamy encounter.
After a trip to a comic convention sparks Mei's jealousy over Nikita's relationship with Ren, Nikita finds himself caught between the desires of the women in his life. Following a seductive encounter with Hatoko and a romantic night with Ren, Nikita wakes up to the fury of an enraged Mei, who discovers that Ren spent the night.
After a distracted intimate morning with his sister Mei, Nikita spends time with Renka, who reveals a shocking supernatural secret. Renka confesses that she is a servant of God who defied divine laws to save Nikita's life during the tragic accident that killed his parents, resulting in her being trapped between worlds. Following one last passionate encounter, Renka vanishes from the human realm, leaving Nikita to cherish the memory of the "angel of Akiba" as he returns to his daily life.