Plot
Yūta Togashi lives in shame of his behaviour in middle-school, characterised by symptoms of "chūnibyō" — delusions of grandeur, displayed though a holier-than-thou persona, "Dark Flame Master" — and intends to start high-school as an ordinary student. However, he unexpectedly encounters fellow first-year student, Rikka Takanashi, who still exhibits chūnibyō as the self-appointed "Wicked Eye", having met her the night before on his balcony. Despite Yūta's annoyances with Rikka's personality, the two spend time together by virtue of living a floor apart in the same apartment complex. They form and develop connections through Rikka's formation of the "Far-East Magical Napping Society – Summer Thereof", its members including Rikka's friend and "Wielder of the Mjollnir Hammer", Sanae Dekomori, the napping enthusiast, Kumin Tsuyuri, and fellow first-year student, Shinka Nibutani; the latter, similar to Yūta, is embarrassed by her own chūnibyō persona in middle-school, the mage "Mori Summer".
Yūta gradually comes to accept Rikka's delusional lifestyle and intent to seek her father's location through the lead of the "Ethereal Horizon", which are challenged throughout their lives, mainly by her relationship with her family. Rikka's elder sister, Tōka, wishes for her to shed her chūnibyō and accept the death of her father. Both Yūta and Rikka come to develop romantic feelings for each other, and it is revealed that Rikka was inspired to live with chūnibyō by observing Yūta in his Dark Flame Master phase.
After getting permission from her grandparents, Rikka continues residing in Yūta's apartment. When Yuta's family travel to Indonesia, the latter and Rikka slowly progress their relationship, but each face their own struggles. Yūta is pressured to advance the relationship more than he already has. Rikka is conflicted about "losing the Wicked Eye's powers" — ridding herself of her chūnibyō — to accommodate her love for Yūta, and if it will be truly accepted. The cast is joined by Satone Shichimiya ("Sophia Ring SP Saturn VII"), a middle-school friend of Yūta, with whom she faces an unrequited love.
The series ends with the anime film Love, Chunibyo & Other Delusions! Take on Me, with Rikka and Yūta eloping in a trip around Japan, and evading Tōka when she plans to invite Rikka to Italy.