Mikos' voice from Heaven (F/F EC)

That name up there is a rough translation of "あにめたまえ!天声の巫女"

Basically it's about two songstress idols/mikos and their fight against perverted deities and monster girls that fall for them. It's very light-hearted and yuri loaded. No one get's exterminated, just befriended. First chapter has a crab girl that wants to smoother them in her breasts and bubbles(and stays on as a character after that). Second chapter has a EC of a thunder god/oni but the two villainesses. Oh, and of course the main heroines have a thing for each other =)

Here are links to the first two chapters on the artist's pixiv page, and some courtesy images.

http://www.pixiv.net/member_illust.php?mode=medium&illust_id=34601987

http://www.pixiv.net/member_illust.php?mode=medium&illust_id=34658796

...mother of God, its beautiful...

New chapter is up, and this time you don't need a Pixiv account to access them since I found this place
http://www115.sakura.ne.jp/~rr/animetamae/index.htm

This chapter involves lusty idols who turn out to be long tongued demonesses that steal busty miko's voice.

Here's the others on their Pixiv plus more
2nd (focuses on the EC of the oni girl) http://www.pixiv.net/member_illust.php?mode=medium&illust_id=34658796
3rd (rival idols, tongue demon girls, more boobie smothering, and stealing of voice) http://www.pixiv.net/member_illust.php?mode=medium&illust_id=34885059
4th (the bed turning into a girl and putting the girl resting on her to sleep, boobie cuddling, sauna traps, more licking) http://www.pixiv.net/member_illust.php?mode=medium&illust_id=35483119
5th (evil dreams, bound goddess, still more licking, servant transformation) http://www.pixiv.net/member_illust.php?mode=medium&illust_id=36406790

There have also been updates on the link above.

Newest one has a huge battle of the boob smothering between crab girl and busty ghost girl, really freaking hot, with more yuri feels near the end.

You can find it here
http://www.pixiv.net/member_illust.php?mode=medium&illust_id=44238158

Or in the general link above.

This is somehow a thing
http://www.pixiv.net/member_illust.php?mode=medium&illust_id=50551104

Because of this?
https://www.patreon.com/Rebis?ty=h

Oh yeah, in the meantime the tongue demon twins fight a giantess who gives them a good tonguing and the cat/dog girls get powered up into muscle girls, who poth the priestess fawn over and one get's a charm attack off on them before the kitsune turns them into more loyal and feral girls. And then they get their powers stolen by the kitsune who empowers the cat dog girls and just when the miko's look like they're turning it around the giantess strikes them down with her boobs... I really do love this. Then just when it looks like the cat/dog girls are going to have their way, a new heroine appears and saves them... crummy deus ex machina...

http://animetamae.com/09L/01.htm

http://animetamae.com/10L/01.htm