Hero Roaster is a cafe in Guro-gu, Seoul, tucked between a Sindorim apartment complex and a factory alley. It serves tea, coffee, and cake, with drip coffee and mugwort einspänner as its main items; the mugwort einspänner is sweet and bitter, and the coffee comes out strong. The entrance is inside the factory alley, a fair distance from the station. The macarons and purchased desserts are disappointing.