What is My sister; only for a year about?

My sister; only for a year is a novel.

Is My sister; only for a year still ongoing?

My sister; only for a year is currently finished. It has 12 chapters.

FINISHEDNOVEL

期間限定いもうと。

Story

Art

What is My sister; only for a year about?: My sister; only for a year is a novel.
Is My sister; only for a year still ongoing?: My sister; only for a year is currently finished. It has 12 chapters.