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70*Extra chapter released in the Aria the Natural Perfect Guide Book.*
"In the Western Kingdom's aristocratic academy, there are countless unwritten rules." During a dance party, the Marquis's daughter is told her engagement is broken off. Everyone acknowledged the closeness of the two, so there must be a reason for such a cruel rejection... However, Carol de la Cassata, the person at the center of the turmoil, has no idea why the engagement is being broken off. So, she decides to seek the wisdom of the student council secretary, who is rumored to be skilled at giving advice. This is a buddy mystery in which a serious commoner secretary and the frivolous prince student council president unravel various incidents that occur at the aristocratic academy.
*Extra chapter released in the Aria the Origination Perfect Guide Book.*
-An anthology of single page girls love manga by various mangaka, presented as responses to a school assignment.
*This volume includes the chapters:* 1. **Hajimete Hamatta Yuri-numa** (はじめてハマった百合沼) 2. **Ima Hamatte Iru Yuri-numa** (今ハマっている百合沼) 3. **Sankaku Kankei Yuri** (三角関係百合) 4. **Idol Yuri** (アイドル百合) 5. **Oppai Yuri** (おっぱい百合) 6. **Kekkon Yuri** (結婚百合)
