There's no strong noticeable accent in Korean words. For example, we pronouce [숙제 homework] like it is [숙쩨](It happens a lot in Sino words), and also pronounce [백화점 department store] like it is [백콰점]. But we just pronounce 쩨, 콰. That is, we don't stress 쩨, 콰. Even when I pronounce [오빠] like it is [옵빠], 빠 isn't stressed in fact. 「きっぷ」sounds like [ki-p-PPU].「っ」gets one beat. Many Japanese learners tend to overlook this point. On the other hand, [ㅂ] of [오빠] has no beat and 빠 isn't stressed. There's a time when I stress [빠], but it's just an option by the situation. There's no strong noticeable accent in Korean words again.