【Heroine Engineering Laboratory】Bad End Simulation Vol4 add’l

This is a collection of additional scenes for [Bad End Simulation Vol4](sold separately).
Based on the requests received in the questionnaire, various scenes that were not included in the main story were newly created in the form of illustrations and videos.
For those who don’t know the main story, a synopsis of the main story and thumbnails of some illustrations are also included.

9 basic illustrations
Differences 40 pictures
Total 59 pages *including cover, work explanation, back cover, etc.
Simple animation (mp4 format)
This work is an additional CG collection. This work is an additional CG collection. The main story of [Bad End Simulation Vol4] is not included.

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