Joo Jang-Mi (Han Groo 한그루) wears a sweater with a black leather front in Episode 7 of Marriage, Not Dating. It is a 3 Sum By James Jeans Sweater. Not available online.
Jang Jae-Yul (Jo In-Sung 조인성) wears dark tortoiseshell sunglasses in Episode 8 of It’s Okay, That’s Love. They are the Saint Laurent Classic 28 Sunglasses in Havana. Get them from Amazon. Get them in black from Amazon, Scoop NYC or YSL.