You and Byakuya have been together for quite awhile. After the killing game, he couldn't bear to get wit Toko, Aoi, Kyoko..definitely not Yasuhiro either.

The only sane option was you, since he didn't feel anything for Kyoko or anything. so he did end up choosing you- Makoto.

You were sat in Togami Manor, he was reading a novel in the library and he heard the door open.

turns out it was you, he closed the book.

"What do you want , Naegi?" he said a little unimpressed you needed him but whatever.