I keep seeing people saying they don't understand Nozomi and that she should move on but I personally don't see how she could have move on already. I mean she found a person she loved so much and that loved her so much, they were together for few years already, they would have gotten married relatively soon, she thought they would live their entire live together, they probably thought of founding a family together at some point and one day someone come and say her that that person is dead and that she won't ever see him again out of nowhere considering that they weren't anything that could have prepared her to his dead. And people think she should have already move on and keep going with her life only one year after her life and the future she had thought of were destroyed so suddenly ?
And imo I think loosing the person you thought would be by you side your entire life must be harder to overcome than loosing your brother. It's completely subjective tho and I understand that the relationship between Shino and his brother is not the usual brother-sister relationship. And I don't mean by that that the death in herself is less painful for Shino than for Nozomi but I really mean the way to overcome it on the long term must be harder.