Natsu o Miteita (夏を見ていた, lit. "I Was Watching Summer"), was the ending theme for the Hotarubi no Mori e Movie. It was performed by Shizuru Ōtaka.
Lyrics
<poem>
Semi no uta waraigoe Yuuyake no akaneiro Kaerimichi toomawari Yakusoku wa "mata ashita"
Natsu wa tada sakihokori Sono inochi kagayakase
Owaranai o-hanashi no Sono saki ni ki ga tsuite KARASU-tachi toozakari Dokoka e to tonde yuku
Natsu wa tada kakenukeru Takaramono wo shimau you ni
Itsu made mo natsukashii Ano koro wa koganeiro Nanigenai mainichi no Katasumi wo terashiteru
Natsu wa mada yatte kuru Yakusoku wo mamoru you ni Natsu wa tada sakihokori
Sono inochi kagayakase<poem>
蝉の歌 笑い声 夕焼けの茜色 帰り道遠回り 約束は「また明日」
夏はただ咲き誇り その命 輝かせ
終わらないおはなしの その先に気がついて カラスたち 遠ざかり 何処かへと飛んで行く
夏はただ駆け抜ける 宝物を仕舞うように
何時までも懐かしい あの頃は黄金色 何気ない毎日の 片隅を照らしてる
夏はまだやって来る 約束を守るように
夏はただ咲き誇り
その命 輝かせThe cicada's song, and their laughter
The crimson color of sunset
The detour on the way back home
The promise of "See you tomorrow"
Summer had only become full in bloom
May your life be brightened up
In this story without end
Upon realizing what is to come
The crows are all far away
Flying off to somewhere
The summer only passes on by
In order to store your treasure
I am always feeling nostalgic
For those days that were golden
They keep alight in the corner
of my current uneventful daily life
Summer will still come again
In order to keep its promise
Summer had only become full in bloom
May your life be brightened up