Responses
I think there's no chapter elaborating how Maya got the ring. It just suddenly pop out.
Here's the chapter where it first came out:
http://www.mangago.zone/read-manga/hidoku_shinaide/tr/1663411/page/12/
Maya bought the ring with the intention of keeping the pest away from Nemu. Sadly Nemu didn't wear his ring much unlike Maya does. But I do think Maya needs the ring more cause he is so irresistible that girls can't leave him alone..
Hmm.... Ok, thanks!!
I'm sorry to ask, but I don't remember the chapter when they exchange rings. Is there a chapter like that? Many thanks!!!