《我唯一的守護者》（韓語：하나뿐인 내편），為韓國KBS 2TV於2018年9月15日起播出的週末連續劇，由《內衣少女時代》洪碩九的導演與《吹吧，美風啊》的金始慶作家合作打造。此劇講述女主角金道蘭（Uie飾）的親生爸爸金永勛（崔秀宗飾）在28年後突然出現後，人生出現巨大改變的女主角和與一直隱藏真實面貌的爸爸之間的故事。
編劇 金始慶
導演 洪碩九
主演 崔秀宗、Uie、李章宇、
尹真伊、鄭恩宇、羅惠美、
朴成勳
製作國家／地區 韓國
語言 韓語
集數 106（100+6）
每集長度 約40分鐘
製作
拍攝地點 韓國
製作公司 DK E&M
播映
首播頻道 KBS2
播出國家／地區 韓國
播出日期 2018年9月15日－2019年3月17日
| 集數 | 播出日期 | AGB收視率 | TNmS收視率 | |
|---|---|---|---|---|
| 大韓民國（全國） | 首爾（首都圈） | 大韓民國（全國） | ||
| 1 | 2018/09/15 | 21.2% | 19.9% | 20.8% |
| 2 | 24.3% | 22.7% | 24.6% | |
| 3 | 2018/09/16 | 22.8% | 21.3% | 22.7% |
| 4 | 25.6% | 23.9% | 26.3% | |
| 5 | 2018/09/22 | 17.2% | 15.6% | 18.2% |
| 6 | 21.5% | 19.7% | 21.4% | |
| 7 | 2018/09/23 | 17.6% | 16.8% | 18.9% |
| 8 | 20.6% | 19.9% | 21.9% | |
| 9 | 2018/09/29 | 21.8% | 20.0% | 23.0% |
| 10 | 27.1% | 25.6% | 27.7% | |
| 11 | 2018/09/30 | 25.5% | 24.6% | 27.0% |
| 12 | 29.3% | 27.9% | 30.8% | |
| 13 | 2018/10/06 | 24.7% | 23.5% | |
| 14 | 27.3% | 25.9% | ||
| 15 | 2018/10/07 | 25.0% | 23.8% | 25.8% |
| 16 | 29.4% | 27.9% | 29.5% | |
| 17 | 2018/10/13 | 21.6% | 19.5% | 22.8% |
| 18 | 25.9% | 24.1% | 26.9% | |
| 19 | 2018/10/14 | 26.1% | 24.0% | 26.4% |
| 20 | 30.1% | 27.8% | 31.3% | |
| 21 | 2018/10/20 | 24.9% | 23.4% | 26.9% |
| 22 | 25.7% | 23.8% | 27.4% | |
| 23 | 2018/10/21 | 27.1% | 25.3% | 27.7% |
| 24 | 31.2% | 29.3% | 31.7% | |
| 25 | 2018/10/27 | 23.1% | 21.7% | 24.9% |
| 26 | 27.9% | 26.9% | 29.2% | |
| 27 | 2018/10/28 | 27.6% | 25.9% | 29.0% |
| 28 | 32.6% | 31.1% | 33.6% | |
| 29 | 2018/11/03 | 25.0% | 23.0% | 26.2% |
| 30 | 29.6% | 27.7% | 30.0% | |
| 31 | 2018/11/04 | 28.5% | 26.8% | 27.9% |
| 32 | 33.3% | 31.5% | 32.6% | |
| 33 | 2018/11/10 | 23.9% | 22.1% | 25.4% |
| 34 | 28.8% | 27.0% | 29.4% | |
| 35 | 2018/11/11 | 28.4% | 27.2% | 28.4% |
| 36 | 33.1% | 32.0% | 33.9% | |
| 37 | 2018/11/17 | 26.7% | 24.6% | 26.8% |
| 38 | 30.2% | 28.0% | 30.3% | |
| 39 | 2018/11/18 | 28.7% | 26.4% | 29.7% |
| 40 | 33.9% | 31.8% | 36.1% | |
| 41 | 2018/11/24 | 26.2% | 23.8% | 28.3% |
| 42 | 31.8% | 29.3% | 33.4% | |
| 43 | 2018/11/25 | 30.7% | 28.4% | 32.8% |
| 44 | 34.8% | 32.3% | 36.4% | |
| 45 | 2018/12/01 | 26.2% | 24.5% | 28.6% |
| 46 | 31.0% | 29.3% | 32.8% | |
| 47 | 2018/12/02 | 31.5% | 30.1% | 32.8% |
| 48 | 36.3% | 34.6% | 37.5% | |
| 49 | 2018/12/08 | 26.2% | 24.9% | 29.3% |
| 50 | 30.8% | 29.1% | 33.8% | |
| 51 | 2018/12/09 | 31.3% | 28.6% | 32.0% |
| 52 | 36.1% | 33.8% | 36.8% | |
| 53 | 2018/12/15 | 26.6% | 25.7% | 26.4% |
| 54 | 31.6% | 30.7% | 31.8% | |
| 55 | 2018/12/16 | 32.1% | 30.8% | 30.3% |
| 56 | 36.2% | 34.8% | 35.3% | |
| 57 | 2018/12/22 | 28.1% | 27.0% | 25.2% |
| 58 | 33.7% | 32.2% | 30.5% | |
| 59 | 2018/12/23 | 32.5% | 30.6% | 32.0% |
| 60 | 36.8% | 34.9% | 35.8% | |
| 61 | 2018/12/30 |
31.7% | 31.4% | 31.2% |
| 62 | 35.9% | 35.4% | 34.7% | |
| 63 | 2019/01/05 | 29.2% | 27.3% | 28.5% |
| 64 | 34.8% | 32.9% | 32.2% | |
| 65 | 2019/01/06 | 32.4% | 30.4% | 31.2% |
| 66 | 37.7% | 36.1% | 37.2% | |
| 67 | 2019/01/12 | 30.8% | 29.6% | 29.7% |
| 68 | 35.2% | 33.8% | 34.7% | |
| 69 | 2019/01/13 | 35.1% | 33.0% | 33.0% |
| 70 | 41.6% | 39.2% | 38.8% | |
| 71 | 2019/01/19 | 32.5% | 32.0% | 29.6% |
| 72 | 37.1% | 36.2% | 35.3% | |
| 73 | 2019/01/20 | 35.2% | 33.4% | 32.9% |
| 74 | 41.0% | 39.4% | 38.9% | |
| 75 | 2019/01/26 | 32.2% | 30.9% | 30.5% |
| 76 | 37.6% | 36.3% | 36.6% | |
| 77 | 2019/01/27 | 35.5% | 34.3% | 34.5% |
| 78 | 39.9% | 38.5% | 40.3% | |
| 79 | 2019/02/02 | 31.3% | 29.5% | 29.5% |
| 80 | 37.5% | 36.4% | 35.3% | |
| 81 | 2019/02/03 | 34.7% | 34.1% | 32.5% |
| 82 | 39.3% | 38.9% | 37.9% | |
| 83 | 2019/02/09 | 32.0% | 31.2% | 30.7% |
| 84 | 36.9% | 36.1% | 36.0% | |
| 85 | 2019/02/10 | 35.3% | 33.5% | 33.8% |
| 86 | 38.4% | 37.1% | 38.1% | |
| 87 | 2019/02/16 | 31.8% | 30.3% | 28.8% |
| 88 | 37.7% | 36.2% | 35.5% | |
| 89 | 2019/02/17 | 37.6% | 35.8% | 34.8% |
| 90 | 42.6% | 41.1% | 41.0% | |
| 91 | 2019/02/23 | 33.8% | 32.3% | 32.8% |
| 92 | 39.3% | 37.6% | 38.7% | |
| 93 | 2019/02/24 | 39.7% | 37.8% | 38.8% |
| 94 | 44.6% | 43.1% | 44.4% | |
| 95 | 2019/03/02 | 34.9% | 33.7% | 33.3% |
| 96 | 40.8% | 40.1% | 39.4% | |
| 97 | 2019/03/03 | 41.4% | 39.6% | 39.2% |
| 98 | 46.2% | 44.7% | 45.8% | |
| 99 | 2019/03/09 | 37.6% | 36.4% | 35.2% |
| 100 | 42.9% | 42.1% | 40.9% | |
| 101 | 2019/03/10 | 44.1% | 42.1% | 40.3% |
| 102 | 49.4% | 47.3% | 46.1% | |
| 103 | 2019/03/16 | 37.6% | 37.2% | 35.9% |
| 104 | 43.8% | 44.0% | 41.9% | |
| 105 | 2019/03/17 | 42.8% | 41.7% | 41.9% |
| 106 | 48.9% | 47.7% | 48.5% | |
| 平均收視率 | 32.30% | 30.79% | － | |
| 特輯 | 2019/12/29 | 19.6% | 18.7% | |