Forgot to File Taxes for Baito Earnings

In 2024 and 2025 I worked a baito with very low earnings, but everything was above board (main job and immigration approved, no problems). For both years of work I got a "報酬、料金、契約金及び賞金の支払調書" form. In 2025 I filed the 2024's taxes online, but this year I somehow missed the email with 2025's earnings so I didn't file it. The total earning (支払金額) was only ¥12,000 (and the 源泉徴収税額 was ¥1,225, if that is important).

Should I try to file it now? If so, can I do it online or should I go to the tax office? Or Is it too small to matter? Also, if anyone knows, will this affect a hopeful PR application?

TIA so much!