Catarina's completely oblivious to every person falling in love with her, which is the entire joke. She's too busy eating cake and accidentally charming everyone around her to notice she's collected a small harem of people genuinely devoted to her. The comedy doesn't come from fanservice or embarrassment, it comes from watching someone who actively refuses to engage with romance tropes while everyone else has already written her love story in their heads.

Before Catarina Claes came into their lives, each of her close friends was wrestling with problems of their own. This single OVA episode looks back at those lonely stretches and shows how her cheerful smile and willingness to lend a hand slowly eased their troubles. It never aired, and it was bundled with the special edition of the seventh manga volume. The story comes from a light novel series written by Satoru Yamaguchi and illustrated by Nami Hidaka, and it mixes comedy, fantasy, romance and slice of life.