
I think your friend must adapt with shounen-ai (two guys kissing) first
http://www.mangago.zone/read-manga/usotsuki_boyfriend/
http://www.mangago.zone/read-manga/seven_days/
And then give them mild yaoi
http://www.mangago.zone/read-manga/devils_honey/
http://www.mangago.zone/read-manga/kikoeru/
http://www.mangago.zone/read-manga/twinkle/
Well.. happy choose (⌒▽⌒)

I think this will do http://www.mangago.zone/read-manga/love_me_baby_sasamura_gou/ (sho-ai)
http://www.mangago.zone/read-manga/sekaiichi_hatsukoi/ (mild)
http://www.mangago.zone/read-manga/you_re_my_loveprize_in_viewfinder/ (hard)

Never Understand is the first ever bl that I read and it was beautiful. There are no smexy scenes, very subtle. All about development of feelings.

Junketsu Drop and konbini-kun

Yup! Agrred.
GUYSS!! My friend wants to read some yaoi, and I would like to recommend some but I dont know which one ;;