Can’t Remember Specific Shounen Ai Manga

I’m looking for what I believe is a shounen ai manga, it’s not naughty enough to be considered yaoi. Super cute. ANYWAYS! It’s about a boy who is known to excel in everything and loses interest quickly. He helps create a virtual world with I believe his brother, a friendship/romance simulator of sorts, and he’s playing the beta version. One thing I believe is/was significant to the story is the ability to see the ocean inside this game but it being unreachable due to the game being incomplete.The MC becomes intrigued/interested in another boy inside this world after having a near run-in with a guy on a bike. Hr basically becomes really addicted and becomes addicted to this game as he tries to figure out more about him.