失物

人の手にあり

hito no te ni ari / ひとのてにありSomeone else has it

Meaning

The lost item is read as being in someone else's hands. It is not a claim that it was stolen; it also works as a prompt to remember things you lent or left with others.

What to do today

Casually ask anyone you might have lent it to.

A word from the capybara

If someone is keeping it safe, that is not so bad either.