So I don't think you've read further than the officials. For some reason yesterday the fan translated chapters weren't there so just in case: Little spoiler up to chpt 29, I made it as vague as possible:
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Minwoo literally admitted to MC that his pushy and controlling behavior is selfish, and MC and his sister both admitted to each other they knew he liked MC basically. It's pretty clear. He's like a brother to MC, it's one sided, and MC knew.
Haiyaaa... Just wrong timing...
Waiting for a train but you never know it's next stop .. uff but still my heart yearns and pains for minwoo he's like a real character in real life situations, and about the ml he's also way to clingy and stuff but nvm
In real life situations you often find ur self struggling to ask them out thinking it might ruin their friendship or even their comfort level with them. It's just that the mc is ... Idk naive or what like duhh kinda dumb