PLS HELP ME FIND THIS BL STORY I FORGOT ITS NAME

they were kids, one is from korea(black haired) and the other is i think from russia(blonde)? they were talking on the phone and and the korean said that he's alone and he(russian??) said that he shouldn't say to a stranger that he's home alone and things like that and the russian kid was trying to pronounce the korean kid's name and there were a lot of adults in the room, one of them is i think the korean's brother