>>4094635It's actually 'only' 545,785, so slightly better than my estimate.
Pixivutil2 lets you download the entire profiles of everyone you're following on pixiv so I followed everyone who consistently posted good art and downloaded about 1300 artists in bulk.
A ton of these are non-KanColle because I didn't filter by tags since pixiv tags are unreliable and they aren't standardized and mandatory like on danbooru.
It IS nice being able to post a new, different picture every day without having to hunt for something good. I do still try to delete stuff where I can though.
