Help me find this webtoon

Hi! I’m looking for this bl webtoon. I believe it’s already completed. Don’t remember the details much, but I think the first few chapters were the uke did taekwondo (?), he fell asleep, and the seme did a shoulder throw to wake him up. There was also a shower scene, and the use was surprised by his dick size. I think they knew each other in the past. If anyone knows, please help me. Thank you!