| 歌曲 | 笑顔の理由 |
| 歌手 | 日向めぐみ |
| 专辑 | 笑顔の理由(TVアニメ『明日のよいち』OP主题歌) |
| [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] | 今日もかわってく |
| [01:10.76] | 同じこの世界で |
| [01:16.08] | |
| [01:22.14] | 一緒に笑ったときでも |
| [01:28.16] | それぞれの理由があって |
| [01:32.64] | あたしのこの笑顔は |
| [01:38.27] | 君が笑ってくれたからかな |
| [01:43.17] | 過去のつらい日々ほど |
| [01:46.82] | かけがえのない日々になってること |
| [01:54.13] | 気付いたんだ |
| [01:56.69] | 僕らの目指す未来は |
| [02:01.33] | まだまだ遠く果てしないけど |
| [02:07.73] | 涙のその理由がある限り |
| [02:13.10] | まっすぐ歩いてゆこう |
| [02:17.65] | 僕たちは |
| [02:20.21] | 今日もわかってく |
| [02:23.89] | 同じこの世界で |
| [02:27.92] | |
| [02:53.87] | 僕らの目指す未来は |
| [02:58.36] | まだまだ遠く果てしないけど |
| [03:04.61] | 笑顔のその理由がある限り |
| [03:10.04] | まっすぐ歩いてゆこう |
| [03:14.79] | 僕たちは |
| [03:17.18] | 何もかわらずに |
| [03:20.91] | 今日も隣にいる |
| [03:26.37] | 同じこの世界で |
| [03:30.69] |
| [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] | jīn rì |
| [01:10.76] | tóng shì jiè |
| [01:16.08] | |
| [01:22.14] | yī xù xiào |
| [01:28.16] | lǐ yóu |
| [01:32.64] | xiào yán |
| [01:38.27] | jūn xiào |
| [01:43.17] | guò qù rì |
| [01:46.82] | rì |
| [01:54.13] | qì fù |
| [01:56.69] | pú mù zhǐ wèi lái |
| [02:01.33] | yuǎn guǒ |
| [02:07.73] | lèi lǐ yóu xiàn |
| [02:13.10] | bù |
| [02:17.65] | pú |
| [02:20.21] | jīn rì |
| [02:23.89] | tóng shì jiè |
| [02:27.92] | |
| [02:53.87] | pú mù zhǐ wèi lái |
| [02:58.36] | yuǎn guǒ |
| [03:04.61] | xiào yán lǐ yóu xiàn |
| [03:10.04] | bù |
| [03:14.79] | pú |
| [03:17.18] | hé |
| [03:20.91] | jīn rì lín |
| [03:26.37] | tóng shì jiè |
| [03:30.69] |
| [00:09.10] | wú lùn hé shí |
| [00:14.21] | xiǎng qǐ de shì nǐ de xiào liǎn |
| [00:19.49] | zhǐ shì zhǐ shì yǒu yī jù huà |
| [00:24.96] | yī zhí hěn xiǎng chuán dá gěi nǐ |
| [00:29.82] | jiù suàn xiàn zài zài hēi àn zhī zhōng |
| [00:33.41] | jiù suàn shì hùn dùn bù kān de měi yì tiān |
| [00:40.82] | wǒ zài zhè lǐ ó |
| [00:43.61] | wǒ men lǐ xiǎng de wèi lái |
| [00:48.06] | suī rán hái hěn yáo yuǎn |
| [00:54.57] | zhǐ yào yǒu yǎn lèi de lǐ yóu |
| [00:59.79] | nà jiù yī zhí xiàng qián ba |
| [01:04.51] | wǒ men |
| [01:06.94] | jīn tiān yě míng bái |
| [01:10.76] | zài tóng yí gè shì jiè |
| [01:22.14] | jiù suàn shì yì qǐ huān xiào de shí hòu |
| [01:28.16] | yě yǒu gè zì de lǐ yóu |
| [01:32.64] | wǒ de zhè gè wēi xiào |
| [01:38.27] | shì yīn wèi nǐ duì wǒ xiào le de yuán yīn ba |
| [01:43.17] | rú guò qù xīn kǔ de rì zi |
| [01:46.82] | biàn wéi bù kě tì dài de rì zi |
| [01:54.13] | yǐ jīng fā xiàn le ne |
| [01:56.69] | wǒ men lǐ xiǎng de wèi lái |
| [02:01.33] | suī rán hái hěn yáo yuǎn |
| [02:07.73] | zhǐ yào yǒu yǎn lèi de lǐ yóu |
| [02:13.10] | nà jiù yī zhí xiàng qián ba |
| [02:17.65] | wǒ men |
| [02:20.21] | jīn tiān yě míng bái |
| [02:23.89] | zài tóng yí gè shì jiè |
| [02:53.87] | wǒ men lǐ xiǎng de wèi lái |
| [02:58.36] | suī rán hái hěn yáo yuǎn |
| [03:04.61] | zhǐ yào yǒu wēi xiào de lǐ yóu |
| [03:10.04] | nà jiù yī zhí xiàng qián ba |
| [03:14.79] | wǒ men |
| [03:17.18] | yī rú jì wǎng dì |
| [03:20.91] | jīn tiān yě zài nǐ páng biān |
| [03:26.37] | zài tóng yí gè shì jiè |