Pretty much anything by Kanda Neko
http://www.mangago.me/tag/Fluffy/
http://www.mangago.me/read-manga/brilli/
It's taking a somewhat angsty turn but MC is an adorable ball of cuteness that brings fluff everywhere (literally)
http://www.mangago.me/read-manga/shiawase_gohan_maki_to_hanazawa/
You GOTTA read this!!! Ajdjahkdlfskahhd makes my heart go
SUPER FLUFF SHOUNEN AI/YAOI PLEASE.