As for Yuno Gasai cosplay, the pink hair and the simple anime costumes, together with the axe, the knife, the phone and the gun, especailly in bloody looks would make any if us noticable.
Minene Uryuu cosplay is also a good idea for girls who want to be cool and identifiable in simple costume.
Yukiteru Amano and Akise Aru are the most popular male characters of Mirai Nikki. Both of them are easy cosplay ideas for girls and boys to be popular easily.