I can only whine, so I want to do it again:
I'm already tired of seeing headcanons with Shinichiro like "first kiss with him" or "first date with him" where the authors write that it all happens in his workshop or garage. I both like and dislike this. Cuz all these headcanons with his garage are the same. And cuz a date in the garage/workshop is both in Shinichiro's style and not. On the one hand, if you were dating Shinichiro then 100% you would have at least one date in these places but on the other hand, even though Shinichiro is a loser, he's not so stupid as to have his first date in a garage where everything is dirty. It's easier to buy a new garage than to clean it up..
I think on their first date he invited his girlfriend over to his place. Shinichiro is a family man and for him family is the most important thing. Family + girlfriend in one place = jackpot. He would have taken his girlfriend to his room: before she arrived, he threw away his used tissues (yeah..), made the bed, tidied the room, set the table, and decorated everything beautifully. The only thing is the date would have been very awkward because Manjiro kept interrupting them. He bothered them just on purpose to embarrass Shinichiro. Only after some time Shinichiro figure out to lock the door, but Manjiro still annoyed them from the other side lmaoo











