We noticed that someone has already translated this tankoubon in full, but since we were already halfway through our translation, we decided to finish and upload it as an alternative version. We also plan to translate parts 1 and 2.
We are currently looking for more Chinese-English translators (to work on more Arknights doujin and others). Contact us on Discord if you are interested!
Discord: https://discord.gg/PbWX7gy
You can help the author of this work by purchasing their work here: https://www.dlsite.com/maniax/work/=/product_id/RJ01178431.html