Trying to remember two manga

There are two manga I'm trying to remember, because recently I was thinking about delivery man set-ups in manga.

One was about a courier who keeps finding himself in trouble, primarily because he keeps getting involved with the daughter of a dangerous man (likely Yakuza.) With the primary scene I recall being the two in a storage room and having to hide in a locker so they aren't found. I can vividly remember the beginning, where the main character is delivering food to people in an second-floor office.

The second was a yaoi manga (pretty sure it was yaoi, at least. Might not be.) about a delivery man, but that's only cover for him. He's actually a member of the police and he's trying to get information against a gang/yakuza, which I... think he gets from a male prostitute, who is favored by the gang leader.

Any help is appreciated. I always find myself with a big backlog of manga and I end up finding interesting ones but lose them in the backlogs again, does that happen to anyone else?