Ah dang, I didn't realize that some relics does not appear in the chest. That explains why there's no medkit in any of those chests. Thanks for taking your time to reply to my feedback and misconception. Hopefully, your game turns out a success for your career.
Also, the Gintama joke was referring to how some of the cards flavor text has a very niche reference that it makes Gintama references seems original in comparison. Cause college essay is all about that anti-plagiarism :p. The flavor texts are great, for the love of god please keep it.