"8way pocket knife" found at 100-yen shop Celia. This is a simplified version of the so-called "Totoku Knife".
Functions are knife, can opener, bottle opener, corkscrew, + screwdriver,-driver, tweezers, pick. Tweezers and picks can be removed and used.
Knives can be used for cutting and peeling fruits. The sharpness is not surprisingly bad.
Can openers and bottle openers can also be used properly. I just searched for a product at a supermarket to try this, but all the domestic canned foods have pull tabs. There may not be many scenes that require a can opener. The same goes for the bottle opener, which is a cap type that can be opened by turning most of the bottled beverages. All of them are often necessary if they are imported products, so it seems to be more useful overseas.
Rather than being convenient to carry around, the merit of getting all the tools that don't appear in many scenes for 100 yen may be greater. I think it's a very suitable item for avoiding the risk of "Oh! Didn't you have that?" That sometimes happens when you live alone.