| Song | 笑顔の理由 (TV size) |
| Artist | 日向めぐみ |
| Album | TVアニメ「明日のよいち!」オリジナルサウンドトラック |
| [00:09.10] | いつでもどんなときも |
| [00:14.21] | 思い出すのは君の笑顔で |
| [00:19.49] | ただ そのたったひとこと |
| [00:24.96] | 君に もう 伝えたいんだ ずっと |
| [00:29.82] | 今は暗闇の中 |
| [00:33.41] | 雲を掴むような毎日だとしても |
| [00:40.82] | ここにいるよ |
| [00:43.61] | 僕らの目指す未来は |
| [00:48.06] | まだまだ遠く果てしないけど |
| [00:54.57] | 涙のその理由がある限り |
| [00:59.79] | まっすぐ歩いてゆこう |
| [01:04.51] | 僕たちは |
| [01:06.94] | 何もかわらずに |
| [01:10.76] | 今日も隣にいる |
| [01:16.08] | 同じこの世界で |
| [00:09.10] | |
| [00:14.21] | sī chū jūn xiào yán |
| [00:19.49] | |
| [00:24.96] | jūn chuán |
| [00:29.82] | jīn àn àn zhōng |
| [00:33.41] | yún guāi měi rì |
| [00:40.82] | |
| [00:43.61] | pú mù zhǐ wèi lái |
| [00:48.06] | yuǎn guǒ |
| [00:54.57] | lèi lǐ yóu xiàn |
| [00:59.79] | bù |
| [01:04.51] | pú |
| [01:06.94] | hé |
| [01:10.76] | jīn rì lín |
| [01:16.08] | tóng shì jiè |