This is OSC theme made at intership at Inchoo.
Magento 2.0+
Installation is pretty easy just put these files like this:
app/design/
├── Matej/
│ │ ├──osc/
│ │ │ ├── ...
│ │ │ ├── ...
Please note that this theme is not official Magento 2 theme for OSC nor anyother store. This is made for practice at internship! Cheers! =)