The story is set in year 2030 where an incident occur in a giant research facility called LABO which has a nuclear reactor. The incident, which is the meltdown of the reactor locks everything in the facility causing 9 people, 3 rescuers and 6 ordinary people, to be locked inside it. They just have to wait to be rescued since help will come in 9 hours when the system will be recovered. The problem is... they only got "magic potions" against radiation for 6 people.

Seven-year-old Rika Midou is sent to Sunny Bell Academy, a children's foster home. Neglected in single-parent household, Rika seems innocent at first glance, but the staff notices signs of dark shadows in her past. Various troublesome incidents start occurring. The director, Tokugawa, quietly observes the situation...! This is a shocking work that reveals the problems related to the care and education of abused children! (Source: Kurage Bunch, translated)

Volume 1 (2023-08-30) 1. **Hyakunen no Koi mo Samemashita. Douyara Zutto Norowareteita you desu** (百年の恋も冷めました。どうやらずっと呪われていたようです) \[Seikan x Mizume\] 2. **Kokoro wo Ayatsuru Kuro Hakushaku wa, 'Ayatsurenai' Watashi ni Honenuki desu?!** (心を操る黒伯爵は、“操れない”私に骨抜きです！？) \[Kotoko Ichi\] 3. **Tsumetai Hazu no Konyakusha to "Dekiai Gokko" wo Shitara, Amaama Sugite Komatteimasu** (冷たいはずの婚約者と『溺愛ごっこ』をしたら、甘々すぎて困っています。) \[omi x Meiri\] 4. **Uwakiguse no Aru Konyakusha ni Tsuite Soudan shite Itara, Soudan shite Ita Aite ga Ichiban Kiken Datta** (浮気癖のある婚約者について相談していたら、相談していた相手が一番危険だった) \[acca x Ecchan\] 5. **Korette Gisou Konyaku no Hazu deshita yo ne?!** (これって偽装婚約のはずでしたよね！？) \[Sora Tsuyukusa x Rumiya Komatsu\] Volume 2 (2023-12-28) 1. **Hyouka Koutaishi no Kiss wa Okashi Yori Amai** (氷菓皇太子のキスはお菓子より甘い) \[Sakura Yukimori x Rin Miasa\] 2. **Zangeshitsu Otetsudai Shonichi ni Koutei Heika ga Zange Shi ni Kimashita** (懺悔室お手伝い初日に皇帝陛下が懺悔しにきました) \[Moyo Yokoyama x Icoma Tanamoto\] 3. **Haikei Juun Enmae no Watashi, Sono Konyakusha wa Uwaki Ouji desu. Kekkon wa Dekiai shite Kudasaru Koushaku-sama ni Shinasai.** (拝啓十年前の私、その婚約者は浮気王子です。結婚は溺愛して下さる公爵様にしなさい。) \[Yumi Shiraho x Toge MIzuki\] 4. **Konyaku Haki Saretanode, Gokujou no Otoko wo Tsukamaete Mikaeshite Yarimasu! (Oya! ? Otouto no Yousu ga……!)** (婚約破棄されたので、極上の男を捕まえて見返してやります！（おや！？弟の様子が……！）) \[Omi Miori x Yuri Seo\] Volume 3 (2024-10-30) 1. **Kakure Agarishou no Reijou wa Kuro no Koushaku ni Amaku Dekiai sareru.** (隠れあがり症の令嬢は黒の公爵に甘く溺愛される。) \[Anbi Ono x Beni Mitsuki\] 2. **Konyaku Kaishou wa Watashi kara** (婚約解消は私から) \[Kei Kiyone x Hiro Oda\] 3. **Konyaku Haki sareta Shunkan ni, Nanika ga Puchitto Kiremashita!** (婚約破棄された瞬間に、何かがプチッと切れました！) \[Misa Tsukigata x Genki Yuuki\] 4. **Wasurerareta Dai Juu Koujo desu ga, Konyakusha ga Ita You desu!?** (忘れられた第十皇女ですが、婚約者がいたようです！？) \[Yuu Ashina x Shouyu\] Volume 4 (2024-12-27) 1. **Koushaku Reijou wa Konyaku Haki Shitai** (公爵令嬢は婚約破棄したい) \[Rana x You Karasumaji\] 2. **Shikimono Reijou wa Sakushi Koushaku ni Marugoto Dekiai sareru** (敷物令嬢は策士侯爵に丸ごと溺愛される) \[Kae Tachibana x Tail Yuzuhara\] 3. **Mou Modorimasen, Modoremasen** (もう戻りません、戻れません) \[Sato Satou x Suzumiya\] 4. **Anata no Konaykusha wa** (あなたの婚約者は) \[Mai Haruno x Tatsumi Kawahara\] Volume 5 (2025-10-30) 1. **Daisuki desu, Danna-sama. Nora Oujo wa Rien wo Ukeirete dete Ikimasu** (大好きです、旦那様。野良王女は離縁を受け入れて出て行きます) \[Baku Yunishima x Naoto Kiraku\] 2. **Imouto Bakari Yuusen suru Shishaku-ke de no Koto no Tenmatsu ni Tsuite** (妹ばかり優先する子爵家での事の顛末について) \[Sakimori Inori x Kono Sakuya\] 3. **Denka, wo Sagashi no Konyakusha wa Tonari ni Imasu** (殿下、お探しの婚約者は隣にいます) \[Sana Kuromiya x Man Sada\] 4. **Egao ga Kowai Hakkou Reijou wa Konyaku Haki Nochi Kyuukon sareru** (笑顔が怖い薄幸令嬢は婚約破棄のち求婚される) \[Eiren x Hanami Nishine\]

An anthology comic of Persona 3 by various mangaka.