any yaoi where the uke has to keep a toy in his butt and be in public/work for the whole d...

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Kichiku, Encount

http://www.mangago.zone/read-manga/kichiku_encount/

http://www.mangago.zone/read-manga/futouhen_sankakkei_no_teiri/
http://www.mangago.zone/read-manga/mujikaku_love_factor/

This is the only one I can think of. Chp.2 I think.

http://www.mangago.zone/read-manga/fudanshi_kun_no_honey_days/

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