can someone summarize the fifth season for me i read the first few chapters and it was too...

End of Season 4: Everybody happy, wedding, fine.
Season 5: Homophobic Grandpa (Teesungs Grandpa), kidnapped Haebom, imprisoned him for months, Taesung getting depressive, self harm, self loathing, found Haebom, managed with sheer luck to secure enough evidence, to bring grandpa to prison but disappeared because? No one knows exactly why. After 6 month he suddenly came back, two pages sex, end of story. No explanation, why he came back after this time or disappear in the first place. If I could, I would go back in time and save myself from reading the last Season.