yn and bruce meet other when they parents work in wayne family place they become friend and they every week yn ask her parents to go to bruce house to play with him. yn and bruce alway be together by side they never separate they even have same neckless that said friendship never end. but yn have crush on bruce but she fear that she dont have a chance with bruce so she keep the felling alway acting she know she not a normal human she have a secret that bruce dont know she have a moster soul that she born with she know bruce never gonna love a monster , so she keep it secret. by acting like a human , but silly yn bruce alway love yn monster or not bruce alway love yn who she is. and he well alway protect and love yn , he fear he lost you like he family and you , bruce promise himself he protect yn even it kill him he still protect yn.