>>1504135>CGDCT anime to issekai inWell, you laid down a pretty narrow spec as it also requires an isekai main character. There is "Gabriel DropOut" where angels and demons attend a high school in the human world, and the main character, Gabriel, is an isekai angel who has to adjust to life on Earth while dealing with typical high school activities and interactions.
I strongly urge you to visit the CGDCT genre index and read through the brief descriptions of various anime series to find the isekai flavor you like.
https://myanimelist.net/anime/genre/52/CGDCTIf you are also looking to have a grounded base of CGDCT viewing (ignoring the isekai requirement) then standard anime in this genre would be: :
K-On! - Follows the daily lives of high school girls in a light music club.
LuckyStar - Chronicles the humorous and quirky adventures of four high school girls.
Yuru Camp (Laid-Back Camp) - Focuses on a group of girls who enjoy camping and outdoor activities.
Nichijou (My Ordinary Life) - A whimsical series where even the most mundane activities are hilariously exaggerated.
A Place Further Than The Universe - Follows four girls on an adventurous trip to Antarctica.
Gabriel DropOut - Angels and demons attending high school and dealing with everyday life.
Bocchi the Rock! - About an introverted girl who joins a band and overcomes her stage fright.
Hinako Note - Centers around a theater club and the girls' interactions.
Sabagebu! (Survival Game Club!) - Features girls in a survival game club, though it's more about their daily lives.
Comic Girls - Focuses on young women trying to succeed in the manga industry.
