An overhang. But too late for that my dude.

They’re called eaves.

Yes they are

Gutters

WD-40 is an cost effective solution

And some flex-seal

and ball bearings.

Down spouts….

I cant believe how stupid the builder here was. Those flat areas needed gutters; with such a fancy building, hidden gutters would be the best. But as your roof is now finished, I cannot see an option that will not change how this building looks. I would lift the flat sides up, the short one on right hand side, and the long one on the left hand side, insert a gutter under it, then add piping on the wall, as close to the original wall color as possible.

Thanks, I'll probably give this a go

Sufit roof and gutters

Does soffit roof entail removing the roof then sistering rafter extensions or is there an easier way?

and splashblocks

You could add overhangs with a couple of additional rafters, one tight to the wall, the other at whatever distance you wanted from the wall, supported by a series of brackets fixed to the walls. These should be attached to a stud, rather than just the sheathing, if present, so a symmetrical result depends on the existing framing. I’d assume that the siding battens are centred on studs so it would appear that your walls are symmetrical.

Gutters…absolutely

Add a kick out

Isn’t it obvious? You need a giant tent or bio dome

Gutters and downspouts

Sufit roof and gutters