Toko is a shy, awkward girl who hates her summer holidays. They just don't seem to end, and she's right. She is stuck on August 31st. Every day's the same as any other August 31st, except when a new character comes and changes how her whole day goes, and what she learns later on is not what she wanted to know...

Volume 1 (2022-11-30) Cover Illustration: Tsubasa Takamatsu 1. **Hakanage na Reijou wa Yarinaoshitai** (儚げな令嬢はやり直したい) \[Kei Mayuzumi x Aoi Sakimori\] 2. **Gyakkou Reijou wa Moto Fiancé no Sugao wo shiru** (逆行令嬢は元婚約者の素顔を知る) \[Miko Yumoto x Akina Nakamuro\] 3. **Makimodori Joou Heika wa Saishou no Tenohira de Odoranai** (巻き戻り女王陛下は宰相の手の平で踊らない) \[Koma Toyama x Ecchan} 4. **Konyaku Haki sareta Akuyaku Reijou wa Danzai Ibento wo Yarinaosu** (婚約破棄された悪役令嬢は断罪イベントをやり直す) \[Cosaji x Saaya Mizuno\] Volume 2 (2023-4-28) Cover Illustration: Tsubasa Takamatsu 1. **Yowamushi Reijou to Kaeru no Tebiki** (弱虫令嬢とカエルの手引き) \[Kuina Kurosuke\] 2. **Maki Modotta Hoshi Bara no Otome wa Akumu wo Harau** (巻き戻った星薔薇の乙女は悪夢を祓う) \[Chikage Nakakura\] 3. **Nanadome no Jinsei de, Watashi ga Negatta Koto wa** (七度目の人生で、私が願ったことは) \[Shun Mugisaki x Momozo Kira\] 4. **Shi ni Modori Reijou Violetta Martin ga Aisareru no wo Akiramete Suki ni Ikita Sono Tenmatsu.** (死に戻り令嬢ヴィオレッタ・マルタンが愛されるのを諦めて好きに生きたその顛末。) \[Aruhi Hamonaga x Yamori Michikusa\] Volume 3 (2023-11-30) Cover Illustration: Tsubasa Takamatsu 1. **Tatoe Sono mi ga Namekuji ni Naroutomo** (たとえその身が蛞蝓になろうとも) \[Hoshina x Yuu Kizaki\] 2. **Kako ni Modottanode Ane wo Yandere kara Mamottara, Kawarini Imouto no Watashi ga Kankin sareta no desu ga** (過去に戻ったので姉をヤンデレから守ったら、代わりに妹の私が監禁されたのですが) \[Urita Nohito x Kosuzu Kobato\] 3. **Hatsukoi wa Futatabime ni Kanau Mitai desu** (初恋は二度目に叶うみたいです) \[Chitose Azuya x Asagao} 4. **Shi ni Modori Reijou no Yuugana Shikaeshi** (死に戻り令嬢の優雅な仕返し) \[Tsubasa Takamatsu x Yamori Michikusa\]

Mahiro is the prince of Mismarca Kingdom, he won't do study nor learn sword skills, he is a lazy prince who only plays until late night. His Imperial Bodyguard Pariel would always scold him for his behaviour. And towards that Mismarca Kingdom, an elite squad from Demonic Kingdom Granmarsenal is aproaching. The Leader of the squad is Lunas, a warrior princess, the third Princess of Granmarsenal. All of Mismarca's vassals voiced their will of fight and bring an all-out war, though there is one man said cowardly "Why don't we have a talk with them?". What kind of fate awaits Mismarca Kingdom and its useless Prince, Mahiro?