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I don't particularly like fluffy manga, but I like to read it once in a while(I usually read something that makes my heart ache). I searched my favorites' list and found some manga that I consider to be kind of fluffy and cute(You might think otherwise). Most of them don't have any unnecessary drama that keeps the story longer, that's why many of them are short(but wholesome nonetheless)
http://www.mangago.zone/read-manga/unexpected_love/
http://www.mangago.zone/read-manga/tattooed_love/
http://www.mangago.zone/read-manga/merry_checker/
http://www.mangago.zone/read-manga/honto_no_uso/
http://www.mangago.zone/read-manga/koi_no_senryaku_management/
http://www.mangago.zone/read-manga/shishi_mo_kobamazu/
http://www.mangago.zone/read-manga/polarity_frustration/
http://www.mangago.zone/read-manga/urusai_kurai_no_kokuhaku_kudasai/
It's giving me similar vibes to this: http://www.mangago.zone/read-manga/the_monster_and_the_beast/
Both of these are so cute and wholesome