Japan Top 100 songs chart
僕にはどうしてわかるんだろう - Vaundy on Japan top 100 recent charts
| Date | Week | Position | Status |
|---|---|---|---|
| 2025-08-11 | 33 | 91 | |
| 2025-08-04 | 32 | 82 | |
| 2025-07-28 | 31 | 71 | |
| 2025-07-21 | 30 | 62 | |
| 2025-07-14 | 29 | 59 | |
| 2025-07-07 | 28 | 55 | |
| 2025-06-30 | 27 | 47 | |
| 2025-06-23 | 26 | 43 | |
| 2025-06-16 | 25 | 38 |
