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Synopsis
A 4-koma comedy about a siscon brother who is the homeroom teacher for his little sister.
FAQ
Sensei wa Oniichan. has 3 volumes.
Sensei wa Oniichan. is currently finished.
Sensei wa Oniichan. was written by Tenya.
Sensei wa Oniichan. was published Jul 12, 2006 to Jan 13, 2010.