Sae and Shindou are two totally different personalities and dating them both has its pros and definitely has its cons. YN has been dating them since college. Years of arguments, flirting, jealousy, and love. Now they’re full adults, working late, making friends, building a life, all while juggling this complicated relationship of theirs. Their friends are getting married, having kids, and they’re stuck in this polycule wondering how to proceed. - Modern Blue Lock AU