missing chapter 7 https://myanimelist.net/manga/111714/Aisaretagari_no_Tsukushikata?q=A...

No it’s not.
I bought this on renta and its marked completed, myanimelist isnt always correct and usually goes by hardcopies

yep your right i agree myanimelist is not always right but neither is renta is also know to copie other sites and make as there own , but yes true i you are not wrong then i looked here :

https://www.mangaupdates.com/series.html?id=144140