| ITF W25 Makinohara | 10/04 04:30 | 25 | [325] Mana Ayukawa v Haruna Arakawa [402] | 6-4,3-6,6-2 | |
| ITF W25 Nanao | 09/27 00:55 | 25 | [497] Rina Saigo v Haruna Arakawa [409] | 6-2,6-1 | |
| WTA Tokio | 09/17 11:25 | 14 | [402] Haruna Arakawa v Xiaodi You [332] | 6-3,1-6,0-6 | |
| ITF W25 Foxhills | 08/02 11:30 | 25 | [402] Haruna Arakawa v Xinyu Gao [436] | 1-6,0-6 | |
| ITF W25 Nottingham | 07/26 15:20 | 25 | [406] Julie Belgraver v Haruna Arakawa [378] | 6-2,4-6,6-2 | |
| ITF W25 Figueira Da Foz | 07/20 14:40 | 25 | [227] Jamie Loeb v Haruna Arakawa [379] | 6-2,6-2 | |
| ITF W25 Guimaraes | 07/13 15:05 | 25 | [384] Haruna Arakawa v Erika Sema [463] | 1-6,2-6 | |
| ITF W25 Corroios-Seixal | 07/07 13:15 | 26 | [99] Lin Zhu v Haruna Arakawa [386] | 6-1,6-3 | |
| ITF W25 Corroios-Seixal | 07/05 09:30 | 25 | [386] Haruna Arakawa v Pei-Chi Lee [466] | 6-4,6-4 | |
| ITF W25 Oporto | 06/30 11:50 | 26 | [277] Alana Parnaby v Haruna Arakawa [386] | 6-4,6-4 | |
| ITF W25 Oporto | 06/29 17:40 | 25 | Arina Solomatina v Haruna Arakawa | 1-6,3-6 | |
| ITF W25 Chiang Rai | 06/09 02:00 | 26 | [244] Nao Hibino v Haruna Arakawa [378] | 6-4,6-1 | |
| ITF W25 Chiang Rai | 06/08 03:25 | 25 | [348] Akiko Omae v Haruna Arakawa [378] | 6-7,1-6 | |
| ITF W25 Chiang Rai | 06/03 03:00 | 26 | Haruna Arakawa v Anastasia Sukhotina | Cancelled | |
| ITF W25 Chiang Rai | 06/03 02:00 | 27 | [469] Haruna Arakawa v Peangtarn Plipuech [378] | 4-6,6-4,2-6 | |
| ITF W25 Chiang Rai | 06/02 02:00 | 26 | Haruna Arakawa v Riko Sawayanagi | 6-4,6-0 | |
| ITF W25 Chiang Rai | 06/01 01:55 | 25 | [469] Haruna Arakawa v Akiko Omae [481] | Retired | |
| ITF W25 Netanya | 05/25 09:15 | 25 | [282] Lina Glushko v Haruna Arakawa [469] | 6-4,6-1 | |
| ITF W25 Akko | 05/22 13:30 | 29 | Haruna Arakawa v Elena-Teodora Cadar | 6-4,6-2 | |
| ITF W25 Akko | 05/21 07:00 | 28 | Nicole Khirin v Haruna Arakawa | 6-7,2-6 | |
| ITF W25 Akko | 05/20 08:00 | 27 | [451] Haruna Arakawa v Olivia Tjandramulia [144] | 6-1,4-6,6-4 | |
| ITF W25 Akko | 05/19 07:00 | 26 | [451] Haruna Arakawa v Pei-Chi Lee [487] | 7-6,7-6 | |
| ITF W25 Akko | 05/18 10:30 | 25 | Haruna Arakawa v Diana Nekhorosheva | 6-3,6-2 | |
| ITF W15 Chiang Rai | 05/01 02:25 | 29 | [475] Yexin Ma v Haruna Arakawa [455] | 6-4,6-1 | |
| ITF W15 Chiang Rai | 04/30 02:00 | 28 | Lanlana Tararudee v Haruna Arakawa | 4-6,4-6 | |
| ITF W15 Chiang Rai | 04/29 02:00 | 27 | Ho Ching Wu v Haruna Arakawa | 6-3,2-6,4-6 | |
| ITF W15 Chiang Rai | 04/28 04:35 | 26 | Salakthip Ounmuang v Haruna Arakawa | 2-6,2-6 | |
| ITF W15 Chiang Rai | 04/27 04:15 | 25 | Watsachol Sawatdee v Haruna Arakawa | 4-6,4-6 | |
| ITF W15 Chiang Rai | 04/21 03:40 | 26 | Talia Gibson v Haruna Arakawa | 6-1,6-3 | |
| ITF W15 Chiang Rai | 04/20 07:45 | 25 | Chompoothip Jundakate v Haruna Arakawa | 2-6,6-7 |