I know you want to raise a pet dog, but I'm really sorry. At one time, I also wanted to raise a pet dog, so I looked for one. Of course, I couldn't raise it because I was allergic. I feel sorry for you for giving up raising a pet, but from an allergic point of view, I think you should give up raising a pet dog now. Living with your family is also a community life, so if you don't get everyone's agreement, you have to give up in part. Moreover, I think you should consider your sister because allergies are serious issues that can pose a threat to life if they get worse. Whether you raise a dog or not, there is no harm to your life, but your younger brother may be very sick. Also, as you know, raising a dog is harder than you think. You have to feed them according to a certain time and clean up your bowel movements. Since you are a student, it is practically difficult to raise a dog entirely on your own. If you're lonely because you don't have a dog, why don't you have time with your family to replace loneliness? Talking to your family and playing with your younger brother may reduce your loneliness. If you have a chance to graduate and live alone after spending time like this, why don't you adopt a puppy then? I hope your loneliness will be satisfied as soon as possible.