ひとりの夜もそばにいようぜ　君と僕の歌を歌う

Rin-chan has been left in Kaede-baachan’s care and is living with her.

We see Kagome and Inuyasha talking, and then Sesshoumaru turns up

Kagome: “Onii-saan!” (She was calling him ‘older brother’. Like how Souta calls her ‘Older sister’ instead of her name. Usually she just calls Sesshoumaru Sesshoumaru, so it’s kind of cute that she’s using ’san’. The kanji were ‘giri’ + ‘ani’ = brother in law, but you still pronounce the same as normal brother.)

We see Sesshoumaru looking disgruntled… and Inuyasha looking disgruntled, too