Can anyone recommend a cdrama genre about school life/reincarnation/regression/transmigration?

I have never watched a drama before but there's I cdrama i always see on my feed called the first frost but I have never watched it

I don't really understand what regression meant, so I skip it.

school life (like high school?):

reincarnation

transmigration

can someone recommend any comedic bromance just like " A Journey to Love ".

thanks!

 MUZE:

can someone recommend any comedic bromance just like " A Journey to Love ".

thanks!

And not comedic but there are some lighter moments: