Before you get into the story, first know the different characters (some spoilers)

Taguri Side

Kazuka Taguri- Age 16- Main male lead, 2nd born Taguri sibling

Kazia Taguri- Age 16- twin sister of Kazuka, 3rd born Taguri sibling

Atrime Taguri- Age 19- older brother of Kazuka, 1st born Taguri sibling

Kizuna Taguri- Age 15- younger sister of Kazuka, 4th born Taguri sibling

Anora Taguri- Age 12- younger sister of Kazuka, 6th born Taguri sibling

Anuki Taguri- Age 13- younger sister of Kazuka, 5th born Taguri sibling

Sera Taguri- Age 36- Head of Family's wife and mother of Taguri siblings

Marai Taguri- Age 37- Head of Family and father of Taguri siblings

Taguri Friends/Allies

Rave Havara- Age 17- Best friend of Kazuka

Aeri Ozera- Age 16- Friend of Kazia, Rave's Girlfriend

Terra Romassu- Age 15- Friend of Kazia

Haruki Kabari- Age 17- Friend of Kizuna

Mya Azumiya- Age 15- Friend of Kizuna

Sokan Dumaris- Age 15- Best friend of Kazuka

Shino Asuka- Age 15- Friend of Kazia, Sokan's Girlfriend

Luna Romeria- Age 16- Friend of Kizuna

Geo Corazu- Age 15- Friend of Kazuka

Blaze Hartime- Age 16- Friend of Kazuka

Shimaku Side

Nerissa Shimaku- Age 15- Main female lead, 2nd born Shimaku sibling

Saroria Shimaku- Age 19- older sister of Nerissa, 1st born Shimaku sibling

Shizuka Shimaku- Age 14- younger sister of Nerissa, 3rd born Shimaku sibling

Arisa Shimaku- Age 12- younger sister of Nerissa, 6th born Shimaku sibling

Jude Shimaku- Age 14- younger brother of Nerissa, 4th born Shimaku sibling

Gendo Shimaku- Age 13- younger brother of Nerissa, 5th born Shimaku sibling

Luanna Shimaku- Age 37- Head of Family's wife and mother of Shimaku siblings

Juno Shimaku- Age 36- Head of Family and father of Shimaku siblings

Shimaku Friends/Allies

Mimiko Kitsu- Age 16- Friend of Nerissa

Ren Yumikara- Age 17- Friend of Nerissa

Azalia Everi- Age 16- Friend of Shizuka

Rose Amora- Age 17- Friend of Shizuka

Mei Zolaro- Age 15- Friend of Shizuka

Tori Novaris- Age 16- Friend of Nerissa

Kagura Karasuga- Age 16- Friend of Jude

Kimiko Karasuga- Age 16- Friend of Jude, Kagura's twin sister

Myuria Trevaris- Age 17- Friend of Saroria

Alexa Vermillo- Age 18- Friend of Saroria

Antagonists- The Origa Corporation

Origa- Female- Leader of the Origa Corporation, personally knows the heads of both families

Vera- Female- Co-Leader of the Origa Corporation, wife of Osiris

Osiris- Male- Co-Leader of the Origa Corporation, husband of Vera

Zemodo- Male- Rank 1 of the Origa Corporation's Elites

Mazuda- Female- Rank 2 of the Origa Corporation's Elites

Harashi- Female- Rank 3 of the Origa Corporation's Elites

Yatoru- Male- Rank 4 of the Origa Corporation's Elites

Zertian- Male- Rank 5 of the Origa Corporation's Elites

Imaru- Female- Rank 6 of the Origa Corporation's Elites

Dysera- Female- Rank 7 of the Origa Corporation's Elites, sister of Azazel

Azazel- Male- Rank 8 of the Origa Corporation's Elites, brother of Dysera

Lokeya- Female- Rank 9 of the Origa Corporation's Elites

Fruena- Female- Rank 10 of the Origa Corporation's Elites

Koraimus- Male- Rank 11 of the Origa Corporation's Elites

Artera- Male- Rank 12 of the Origa Corporation's Elites

Now enjoy the story (or act it out since it's like a play)