
I don't understand this.
What exactly do you mean by uke x uke?
Cause the definition of seme is the one putting it in. Between two ukes no one puts it in. So you want a manga with foreplay and no actual penetration between two uke.
Unless you meant a seme who used to be an uke, but it's now a seme because of their chosen partner (Cause i have a manga in mind that fits this category.)

http://www.mangago.zone/read-manga/free_dj_pori_yuri/
Even now I still feel lost seeing 2 Uke enjoy Yuri sex-toy. Σ(  ̄□ ̄||)

Oh btw, ukexuke is also called homo yuri, lol. Very few utilize the concept and i got a coule of it here in my seke and role reversal list, i noted it there. Or you can post in my board and ask http://www.mangago.zone/home/mangalist/33677/

http://www.mangago.zone/read-manga/pet_keiyaku/tr/125892/page/7/
In a way, those two are Ukes
Does anyone know any manga with uke x uke, no seme? doujinshis are fine too...I'm really into uke x uke right now ⁄(⁄ ⁄·⁄ω⁄·⁄ ⁄)⁄