| 歌曲 | シアワセ定義 |
| 歌手 | Duca |
| 专辑 | 彼女と俺と恋人と。 オリジナルサウンドトラック Original Soundtrack "In Our Living Room" |
| [00:21.66] | 柔らかな陽が射した |
| [00:24.68] | カーテン越しの空 |
| [00:27.23] | まだ少し眠い目こする朝 |
| [00:33.83] | 色違いの笑顔に 変わらない笑顔を |
| [00:39.11] | ありふれた僕たちの毎日 |
| [00:45.04] | 重ね合わせるように |
| [00:48.47] | 思い寄り添うように |
| [00:51.53] | 大切にしたいから ずっとずっと |
| [00:57.60][03:00.77] | そばにいると それだけで |
| [01:00.60][03:03.65] | 心温かな気分 |
| [01:04.54][03:07.56] | 他に理由なんて何もいらないんだよ |
| [01:09.71][03:12.82] | 普通じゃない そんなコト |
| [01:12.73][03:15.75] | 大して問題じゃない |
| [01:16.72] | シアワセの定義なら 胸の奥に |
| [01:24.72] | 広がってる |
| [01:34.80] | 喜びも悲しみも一緒に分け合おう |
| [01:40.11] | つないだ両手は温かい |
| [01:46.75] | 確かに繋がってゆく 思い描く未来 |
| [01:52.02] | 特別な僕たちの毎日 |
| [01:57.95] | 壊れてしまわないように |
| [02:01.39] | 思い離れぬように |
| [02:04.38] | かけがえのない時間(とき)を |
| [02:09.01] | 一緒にずっと |
| [02:10.54] | 抱きしめると それだけで |
| [02:13.56] | 心満たされる気分 |
| [02:17.47] | うまく説明できない気持ちなんだよ |
| [02:22.63] | 普通なんて 価値観は |
| [02:25.65] | それぞれ自由でいいよ |
| [02:29.62] | シアワセの定義なら 笑顔で探そう |
| [02:47.77] | 喧嘩をして意地をはって |
| [02:50.87] | お互い素直になれず |
| [02:54.37] | 気まずくなっても |
| [02:57.58] | それでもきっと |
| [03:19.72] | シアワセの定義なら 胸の中に |
| [03:27.77] | 輝いてる |
| [00:21.66] | róu yáng shè |
| [00:24.68] | yuè kōng |
| [00:27.23] | shǎo mián mù cháo |
| [00:33.83] | sè wéi xiào yán biàn xiào yán |
| [00:39.11] | pú měi rì |
| [00:45.04] | zhòng hé |
| [00:48.47] | sī jì tiān |
| [00:51.53] | dà qiè |
| [00:57.60][03:00.77] | |
| [01:00.60][03:03.65] | xīn wēn qì fēn |
| [01:04.54][03:07.56] | tā lǐ yóu hé |
| [01:09.71][03:12.82] | pǔ tōng |
| [01:12.73][03:15.75] | dà wèn tí |
| [01:16.72] | dìng yì xiōng ào |
| [01:24.72] | guǎng |
| [01:34.80] | xǐ bēi yī xù fēn hé |
| [01:40.11] | liǎng shǒu wēn |
| [01:46.75] | què jì sī miáo wèi lái |
| [01:52.02] | tè bié pú měi rì |
| [01:57.95] | huài |
| [02:01.39] | sī lí |
| [02:04.38] | shí jiān |
| [02:09.01] | yī xù |
| [02:10.54] | bào |
| [02:13.56] | xīn mǎn qì fēn |
| [02:17.47] | shuō míng qì chí |
| [02:22.63] | pǔ tōng sì zhí guān |
| [02:25.65] | zì yóu |
| [02:29.62] | dìng yì xiào yán tàn |
| [02:47.77] | xuān huā yì dì |
| [02:50.87] | hù sù zhí |
| [02:54.37] | qì |
| [02:57.58] | |
| [03:19.72] | dìng yì xiōng zhōng |
| [03:27.77] | huī |
| [00:21.66] | róu hé de yáng guāng |
| [00:24.68] | tòu guò chuāng lián zhào shè dì tiān kōng |
| [00:27.23] | hái yǒu xiē hūn hūn yù shuì de zǎo chén |
| [00:33.83] | bù tóng yán sè de xiào róng shì bù biàn de xiào róng |
| [00:39.11] | wǒ men píng fán de měi yì tiān |
| [00:45.04] | xiàng chóng dié de |
| [00:48.47] | sī niàn yí yàng yī wēi |
| [00:51.53] | xiǎng hǎo hǎo de zhēn xī yī zhí yǒng yuǎn |
| [00:57.60] | dōu zài nǐ shēn biān |
| [01:00.60] | nuǎn rén xīn huái de xīn qíng |
| [01:04.54] | qí tā lǐ yóu zhī lèi de shén me dōu bù xū yào |
| [01:09.71] | bú shì pǔ tōng de nà yàng de shì qíng |
| [01:12.73] | bú shì shén me tè bié de wèn tí |
| [01:16.72] | xìng fú de dìng yì de huà zài nèi xīn shēn chù |
| [01:24.72] | yán shēn zhe |
| [01:34.80] | xǐ yuè hé bēi shāng yě yì qǐ fēn xiǎng |
| [01:40.11] | qiān zhe de shuāng shǒu shì wēn nuǎn de |
| [01:46.75] | dí què shì lián jiē zhe xīn zhōng miáo huì de wèi lái |
| [01:52.02] | tè bié de wǒ de měi yì tiān |
| [01:57.95] | xiàng méi huài diào de |
| [02:01.39] | sī xiǎng yí yàng bù lí |
| [02:04.38] | bù kě dài tì de shí jiān shì de |
| [02:09.01] | yī zhí zài yì qǐ |
| [02:10.54] | jǐn jǐn dì yōng bào jiù zhè yàng ér yǐ |
| [02:13.56] | nèi xīn gǎn dào bù mǎn de xīn qíng |
| [02:17.47] | shì bù néng hǎo hǎo shuō míng de xīn qíng a |
| [02:22.63] | pǔ tōng de jià zhí guān shì |
| [02:25.65] | gè zì zì yóu jiù xíng le |
| [02:29.62] | xìng fú de dìng yì de huà yòng xiào róng qù xún zhǎo ba |
| [02:47.77] | chǎo jià de yòng yì shì |
| [02:50.87] | bǐ cǐ dōu wú fǎ tǎn shuài |
| [02:54.37] | jí shǐ bù róng qià |
| [02:57.58] | yě yí dìng |
| [03:00.77] | zài nǐ shēn biān jiù zhè yàng ér yǐ |
| [03:03.65] | nuǎn rén xīn huái de xīn qíng |
| [03:07.56] | qí tā lǐ yóu zhī lèi de shén me dōu bù xū yào |
| [03:12.82] | bú shì pǔ tōng de nà yàng de shì qíng |
| [03:15.75] | bú shì shén me tè bié de wèn tí |
| [03:19.72] | xìng fú de dìng yì de huà zài nèi xīn shēn chù |
| [03:27.77] | shǎn yào guāng huī |