Shinka Nibutani, a high school class representative and cheerleader, cultivates a polished image of elegance and popularity, masking a sharp-tongued, easily irritated private self. This duality emerges from her desperation to bury her middle school persona as “Mori Summer,” a chuunibyo alter ego who wove intricate tales of magical realms in a blog titled *Mabinogion*. Her attempts to erase this history spark ongoing clashes with Sanae Dekomori, an ardent chuunibyo who venerates Mori Summer but scorns Shinka as a “fake,” refusing to acknowledge her true identity. Shinka infiltrates the Far East Magical Napping Society to reclaim and obliterate copies of the *Mabinogion* held by Sanae, their hostility gradually softening into unspoken mutual affection. A tipsy kiss in an OVA and a comically tense bed-sharing scene in the *Take on Me* film hint at unresolved emotional undercurrents between them. Initially bonding with Yuuta Togashi over shared embarrassment for their chuunibyo pasts, Shinka’s rapport with him frays when her Mori Summer identity surfaces. Yet pragmatic loyalty keeps them allied, and she becomes an unexpected advocate for his romance with Rikka Takanashi. Her dynamic with airheaded clubmate Kumin Tsuyuri reveals reluctant warmth, as she begrudgingly adapts to the group’s quirks while shielding traces of kindness beneath her tsundere facade. Shinka’s journey traces her gradual acceptance of Mori Summer as an inescapable facet of her identity. Though she clings to her curated normalcy, defensive acts for friends or half-hearted participation in chuunibyo antics betray lingering vulnerability. Her growth culminates not in discarding her complexities but in balancing her refined exterior with quiet acknowledgment of the fantasies that once defined her.