I wrote this fic for the Shop AU theme (Week 2) of the kakairu Nine Weeks Of Summer event going on atm 
The Shop With No Name (2291 words) by demonofabove
Chapters: 1/1
Fandom: Naruto
Rating: Not Rated
Warnings: No Archive Warnings Apply
Relationships: Hatake Kakashi/Umino Iruka
Characters: Hatake Kakashi, Umino Iruka
Additional Tags: shop au, Fuuinjutsu Master Umino Iruka, Fluff, Sweet
Summary:
Kakashi is given the address of a shop that sells special seals; and when he enters, he finds a lot more than he bargained for.