Raw: https://e-hentai.org/g/1471734/8806275c13/
Translation: Levander (via Danbooru)
Editing: Quin2k
Editing was commisioned via bouty by: sunandsea, klorpa, AnonimpersonJR, cv9x, and Pr1de

Additional credits go to editors/translators of flashback scenes.

If you notice any glaring defects with the editing, please PM me. I'm particularly proud of stitching pages 51/52 (180 pixel gap) and 55/56 (280 pixel gap) together.

Since this doesn't make much sense without the prior volumes:
Prequel (translation not on e-hentai): https://danbooru.donmai.us/pools/14990
Vol 1: https://e-hentai.org/g/1587360/104a8d0bf2/
Vol 2: https://e-hentai.org/g/1587377/9481891974/
Vol 3: https://e-hentai.org/g/1590992/990b9c2697/
Vol 4: https://e-hentai.org/g/2849956/75a80c4bf3/
Vol 5: https://e-hentai.org/g/2870718/0adfe02289/
Vol 6: https://e-hentai.org/g/2999597/e596f8c8ba/

It's been years since this released...... final part when......

Base +6

Good question. I looked up their PIXIV account and they're still active, just not on Touhou Project stuff. Last relevant post on that was around 2020. Seems they had a hiatus 2020-2021 (from Pixiv at least) and started a "Healthy Living in Another World with Two Months Left to Live" manga and have been working on that since.

Base +6, bunchy bunchy +6

They've already made progress on the final part as well as its cover so its a bit unfortunate it never got finished/released (the wips are on their twitter if you scroll down enough, tho they've deleted some of them in the past so im not sure if it's still all there"

Base +6