According to the official ANA website, skis and snowboards fit under the ‘sports equipment’ banner for ANA flights. They can be checked in as your free baggage allowance if they fit between 158 cm (62 in) to 292 cm (115 in), and the weight is under 45 kg. ...
Any weapons, ammunition, and sharp objects – these objects are ‘restricted’ and you may be prompted to provide a reason why you need to bring it. In many cases, you may end up having the object totally prohibited or put into checked baggage. ...