We’re due for a least the sister showing up in person or at least his home life.
a lot of people think the only thing impairing the Mikari-Masamune romantic development is an arc of introspection into Masamune, more of his past, and everything related to his family, and i 100% agree
his "inability" to fall in love comes from his trauma with the females on his family, so we need to completely work on that first
still, a part of me just want them to start dating already lmao
but i like Masamune so i want him completely polished when the time comes