classic example of almost everything being deadly to yukkuri, including a free home. Props to the artist for not doing the obvious "box was actually a trap" at the end. Nope, just some idiots getting in a box and having it slide into a drainage channel.
@Sclavus you can add overlay boxes (notes) to the picture with the translation, if you want to contribute! Just press the "N" key on the keyboard or the "Add note" link on the sidebar (shown on the right for large screens, below the picture on mobile.) There's no need to make a full list of everything (unless you really want to.)