Blue Flag (青のフラッグ) by Kaito (series)

Blue Flag (青のフラッグ) is a series of manga by Kaito. It includes the following books:

Book #	Title/Author
1	Blue Flag, Vol. 1 by Kaito
2	Blue Flag, Vol. 2 by Kaito
3	Blue Flag, Vol. 3 by Kaito
4	Blue Flag, Vol. 4 by Kaito
5	Blue Flag, Vol. 5 by Kaito
6	Blue Flag, Vol. 6 by Kaito
7	Blue Flag, Vol. 7 by Kaito
8	Blue Flag, Vol. 8 by Kaito