安心できない七つ道具？

From Author Wars - https://authorwars.com/books/an-xin-dekinaiqi-tsudao-ju-3222143.html

Overview:

Title: 安心できない七つ道具？
Author: 賀東招二
Year: 2003
Type: Collections
Series: Full Metal Panic! Stories
Number in Series: 7

Variant Titles:

2023. Untenable Seventh Heaven Feeling?