Until I bought this eyeliner I actually hadn't bought any in Japan as I bought 4 with me to Tokyo, but apparently Japanese liquid eyeliners are amazing so I decided to get one! The one I originally bought came without the cap that makes it looks like a Moon Stick so I went back and bought another eyeliner with the cap haha (dedication).
This eyeliner is definitely very Japanese style, a lot of girls just do an extremely fine line and not much of a flick/cat eye - so this brush is a crazy thin 0.1mm. This means for a thicker western cat eye you do a bit of filling in but it's easier to be precise with the thickness of the line and you can get your eyeliner wings uber sharp.
It also says it's waterproof on the packaging but then removable with hot water (lol), if you aren't looking up at the sky during a downpour it really stays put and super opaque during the day. However, occasionally my right eye does this 'oh hey thur I see you made effort with your eye make up today, let me ruin that for you' thing where it waters out of the right corner like mad, which does cause this eyeliner to sort of dissolve (but not run, which is a positive). However to combat this I just go over the wing part of my eyeliner with MAC Liquidlast cos that shit does not move for anything.
Mainly I'd recommend this eyeliner to Sailor Moon fans, as there are better fine line Japanese eyeliners on the market in terms of staying power. There's also a version with the Cutie Moon Rod cap you can buy, they're actually being sold on eBay for only about £5 more than they in stores in Japan so definitely worth investing if you're a fan (sold HERE and HERE, seller is based in Hong Kong though).
Any sailor moon fans out there who'd buy this? xx