Long term luggage storage Yokohama

Travelling to Yokohama by ship from Vancouver. Then 20 days travelling Japan by train returning to Yokohama to pick up cruise ship to Australia. Require long term luggage storage but hear Bounce not suitable. Recomendations please.

Takuhaibin delivery service.

https://www.japan-guide.com/e/e2278.html

You can use delayed delivery, up to 7 days later.

https://faq-en.kuronekoyamato.co.jp/app/answers/detail/a_id/5394/~/whe...

So if you use this service 1-3 times (depending on your actual itinerry) you will be fine.