TITLE!!! OMG IT WAS A GEM EVEN THO THE ML WAS PISSING ME OFF

I NEED THE NAME OMFG ok so it's a dude making a list of things they need to do before he turns 30 in like a couple of days. One is which is getting a lover, ML comes around and says he wants to help the mc with the list. There was a chapter where a co-worker saw them together and when the coworker asked what they're doing in (insert Japanese place thing) in which the ML responded coldy and said that he and MC have no ties together (at the time MC was wondering what relationship ML and MC had). MC then ran and ignored ML and when it's like the night before his birthday(or something) the MC went to ML and apologized to him(I DON'T KNOW MAN I HATE THIS PART BECAUSE IT SHOULD BE THE ML APOLOGIZING NOT THE MC) and then boom ending