美術部の領地と思しき「開かずの間」を巡る鉄研と映研の争いの最中、その部屋に突如として異様な鉄道模型が出現!? 表題作を含む５編収録のコミカルな学園ミステリ短編集
9 卷
会错意的冬日
2007-10-31
さよならの次にくる〈卒業式編〉
2009-06-30
さよならの次にくる〈新学期編〉
2009-08-30
本卷
2011-05-29
いわゆる天使の文化祭
2011-12-11
昨日まで不思議の校舎
2013-04-27
家庭用事件
2016-04-28
卒業したら教室で
2021-03-11
新学期にだけ見える星座
2026-01-30
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