冴えない彼女の育てかた

The Way of Two Boring Rivals' Encounter (2x1)

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One and a half years ago at Toyogasaki Academy. Utaha confirms that the library is carrying the light novel she wrote Metronome in Love. She leaves and gets stopped along the way by Eriri Spencer Sawamura. We finally get to see how Eriri and Utaha meet. What exactly happened between them?!