If you're looking for manga similar to Kodama Maria Bungaku Shuusei, you might like these titles.
Higasa Sachi draws manga, but keeps it hidden from her classmates and acts like a model student. Alice Toyozaki is openly otaku, draws manga in class, and is bullied by her classmates. One day Sachi stands up for Alice and is consequently invited to the manga research club.
The Kitauji high school wind instrument club had at one time participated in national tournaments, and was a champion school, but after the club's adviser changed, they have not been able to even participate in the qualifying tournament. Under the strict leadership of Taki, a substitute for Ms. Rikako, they steadily build up their strength. As they fight over who plays solos, some students give priority to studying and quit club activities. Finally, the long wished-for day of the contest arrives.