After recovering from adolescent delusions, Yuta transfers schools to begin anew. As he tastes the succulent fruit of normalcy, Rikka Takanashi discovers Yuta's delusional past and declares that they are soul mates, which makes things anything but normal.

Yuta wants to crush on the beautiful Shinka, but Rikka's antics prohibit it. A visit to Rikka's house reveals how delusional she really is. Her eclectic collections are almost stranger than her behavior! What's worse: Rikka's sister knows about Yuta's past!

Unusual circumstances forces Yuta and Rikka to live under one roof. Keeping it under wraps is top priority as the new school year starts.

Nibutani becomes obsessed with the state of Yuta and Rikka's questionable romance, and pressures Yuta to take control of his girlfriend and lead her down the righteous path of boy-girl relationships.

Rikka is acting strangely around Yuta, and it takes all of her courage to confess her true feelings to him.