Tybalt kills Mercutio instead of Romeo This is situational irony because?

The situational irony in this scenario arises from the fact that Romeo and Mercutio are close friends, while Tybalt is Romeo's sworn enemy. It would be expected for Tybalt to direct his aggression towards Romeo, his primary rival. However, in this alternate scenario, Tybalt unexpectedly kills Mercutio instead, leading to unforeseen consequences and a shift in the conflict dynamics. This deviation from what is considered "normal" or expected creates the ironic situation where Romeo's friend becomes the victim of the feud, rather than Romeo himself.