I didn't know if you wanted to see as in 'WATCH' or see as in 'READ', but here's a few 3S that I have saved in my list. I hope you like it.
- http://www.mangago.me/read-manga/ikujinashi_no_spectator/
- http://www.mangago.me/read-manga/choco_strawberry_vanilla/
- http://www.mangago.me/read-manga/docchi_ni_suru/
Your name scare me a bit. HA+ BTW I have tag..
http://www.mangago.me/people/tag/2337/3P%2B/
My Threesome list, you'll see different positions http://www.mangago.me/home/mangalist/84846/
I wanna see a bl three some (=・ω・=)