It is a bit ambiguous in this case.
The anime finished after the manga:
Anime finished: June 24, 2006
Manga finished: January 01, 2006
... But we could not confirm the source content in MangaUpdates.
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Keita Itou, an ordinary young man, unexpectedly receives an invitation to the prestigious Bell Liberty Academy, a school known for its exceptionally talented and attractive male students.
Overwhelmed and unsure of why he was chosen, Keita finds himself navigating the complex social hierarchy of the school, questioning his own worthiness amongst such gifted individuals.
As he tries to understand his place at Bell Liberty, Keita forms close bonds with various classmates, especially feeling drawn to the kind and enigmatic Kazuki Endou.
The anime focuses on Keita's journey of self-discovery, his struggles to fit in, and the deepening relationships he cultivates within the unique environment of Bell Liberty Academy.