If you're looking for anime similar to Chouchou Jiken, you might like these titles.
Six months have passed since Rayne, Hyuga, Angelique and Jade were betrayed by Nyx and watched both him and their mansion burn to the ground. Arcadia is now in ruin, Thanatos is growing stronger, and the Aube Hunters - who have been missing for some time - are now seen as scapegoats for the destruction of the land. With time running out, Arcadia's only hope lies with the now-scorned Aube Hunters and Angelique, the only person capable of saving the land from darkness...
A girl named Asagi Haru works as a maid of the Miyanomori family, which is headed by one of Japan's most powerful magnates. However, the family head suddenly announces that he is retiring, so one of his six sons must assume control of the family.
After defeating the Spirit of the Sacrea which prevented the newly born Seijuu Universe from developing, Angelique hears that the Queen of Seijuu Universe – the one who maintains the stability of nine Sacrea - has disappeared. Moreover, she cannot go back to her home universe because the dimensional corridor connecting both universes has been destroyed. The Seijuu Universe is still in danger and Angelique is left alone without the support of nine Guardians. What should the Legendary Etoile do to find the Queen and bring her back?
Uta no Prince-sama: Maji Love Revolutions continues after the end of Uta no Prince-sama: Maji Love 2000% when budding boy band ST☆RISH wins the Uta Puri Award for best new rookie group. All seems well for them and Shining Agency’s other group QUARTET NIGHT, but soon an opportunity to perform in the opening ceremonies of an international sports festival surfaces. It’s group against group in a fierce battle that will take more than 2000% to win; it will have to be a LOVE REVOLUTION!
The STARISH sextet is finding success as their careers are put on the fast track! But before they can call themselves true idols, they must win an award...the mysterious "Newcomer Award." Now Nanami and STARISH are facing their toughest challenge yet as they put their talents to the test! And when the six main members of STARISH are taken under the wings of the seniors, their less-than-thrilled upperclassmen will show them what it really takes to become idols.
When Haruka gets the chance to take the entrance exam for Saotome Academy for the Performing Arts, it seems as though she’s one step closer to her dream of composing songs for her favorite singer, Hayato. However, this is no gleeful high school musical experience, and Haruka’s hiding a dreadful secret that may silence her musical ambitions forever. And even if she does get into Saotome, the competition will be more brutal than going on Japan’s Top Idol!