What do shakespearean comedies and tragedy share

Tragedies and comedies of Shakespeare's works share the ironic tone of the character's speeches, the involvement of supernatural forces in the plot and at times troubled romantic relationships.

Explanation:

William Shakespeare most often deal with the same themes in his works, be it a tragedy or a comedy. By definition, it is evident that both categories are opposites of each other. One, a happy funny story while the other ends in a tragedy. But Shakespeare managed to infuse both with similar themes even with their contrasting categories.

Ironies are most notably the literary device that he utilizes the most. He uses it in his speeches and dialogues of his characters, sometimes using it as a means of relaying a political or social message.

Another common thing is the use of supernatural elements. Tragedies like "Hamlet" has the three witches while the comedy "A Midsummer Night's Dream" has the fairies and wood creatures.

Also, troubled relationships are almost always a part of Shakespeare's works. Be it the tragedy "Othello" 'Romeo and Juliet" or the comic "As You Like It" or "The Merchant of Venice" all have some characters having troubled romantic relationships.  

well the central charater is kaneki so kaneki but in tokyo ghoul re kaneki has a new persona so i guess his new persona trying to be stronger