I can't seem to find a place to buy it digitally or find it scanned. Does anyone know how to get this.
tsumino(.com)
>>14878895
I'm sure you've stumbled upon these links already:
https://www.doujinshi.org/book/868340/
http://kuroyuki.x.fc2.com/lovelive.html
But it does not provide a source to buy it digitally, only mail-order. You might have better luck asking /h/, perhaps in the management thread, as they generally are pretty knowledgeable about this sort of information.