both has manga/webtoon which is drawn and kinda comes to life
in the movie it comes true for real in the real life
in W kdrama it first builts the other world where characters appear are developed and slowly from there it begins to actually affect reality

Both have children involved as the big part of the plot. In the Defendant the father had to listen so the child doesn't get killed the same in Wanted where the mother has to listen to kidnapper for the sake of her child safety. Both shows have this ability to make you feel as a big part of it, like you're experiencing everything together, once you start it is hard to stop. Both focuses on justice and crimes.

to be honest the humor is very similar, it makes you laugh and it has the hints of BL in it you know though more of them are bromance because the romantic relationship isn't admitted and only used to make us curious for what's next

Well they both give off similar atmosphere I don't know why. They shouldn't be really compared together but I can recommend you to watch it. Both of them are sweet and sometimes stressing. Sotus is more focused on the two main guys while love sick shows more stories of people. Both worth watching really.