
I have a link in here for chapter guide in case you want to reread your fave couples chapter
http://forums.mangafox.me/threads/363871-list-of-chapters-with-corresponding-couples-(for-easy-reference!)

I needed a captain to enlighten me if this is a manga or a novel.
http://www.mangago.zone/read-manga/missing_code/mf/v01/c001/4/

Wachi should just try to be cold with Makio so that the guy could have a taste of his own medicine. Damn Wachi's just so wrapped around his little finger.

I think it's kind of cute tbh. Wachi loves Makio and puts major effort into trusting him even when every logical thought in his brain tells him he shouldn't.
Makio's cockiness and omniscience were starting to get a bit annoying tho. It was incredibly satisfying (and ironic) when Wachi pointed out that Makio refuses to tell Wachi anything about his past or where he disappears to when he's not with Wachi, and therefore doesn't trust him. I totally fangirled over that.
I get what you're saying. As the audience, we still don't really have a clear idea of how Makio sees Wachi, so we can relate to how Wachi feels by not always knowing where he stands with Machi (and guys say WOMEN are complicated). The author will probably use the new guy to stir up some kind sh*tstorm between Wachi and Makio and hopefully clear some stuff up for us (like when Makio will finally, finally declare his undying love for Wachi).
If this mnga goes to the rebellious phase of Sasuke then I ain't reading this sht. Pls. Spare kacchan with all the clichè