Hello,

The Trial Jonin Medal is offered for a limited time to players who meet specific requirements.

Please note that none of the item rewards from activating a Jonin Medal are given with the trial.

We are unable to reveal the exact requirements to obtain a Trial Jonin Medal.

Currently the most commonly given "Trial Medals" are the Chunin medals which are the Silver Medals and are given in "Growth Scroll level 5 Milestone"