let’s see… you want something sexy, but not TOO sexy. (where is potter steward when we need him?) how about jerk off instruction (joi)? it is to jav what air-guitar is to rock-n-roll. there are joi videos done by big jav names in which no one bares a nipple. others have scenes where the actress ends up in naked sexual encounter. (if that happens, you could always close your eyes.) mostly there is constant, smiling encouragement (some are even labeled “jerk off encouragement”) but little or no action. here’s a nice example:
rct-653 stars ruka kanae, yuri shinomiya, aimi usui, suzu ichinose, shuna kagami, and rin momoi. they are a veritable encyclopedia of information on the subject of male masturbation. and if you are one of those (as are many of the members of akiba-online) who is largely self-taught, you’d be surprised at the number of things you could pick up from them. there is a working link below the pix:
http://javpop.com/2014/09/24/rct-653.html
as you can see, these girls really enjoy their work. if they aren’t to your taste, there are plenty more out there who know answers before you even ask the questions. like that proverbial girl in the first row back at school, they always have their hands in the air. and even if it turns out that this is not the type of video that you’re looking for, at least you might learn a thing or two.