It’s called アカシアの実
The Japanese don’t use Baidu, they use Yahoo or Google.
When I looked there, I only found the Mandarin version of Hongdou. Although the title says Aアカシアの実, it was probably just the album that arrived in Japan and was translated into this name.
Actually, LZ, what you are listening to is Korean... ↓
/programs/view/WsBK2fGZMIc/
Another name "红豆-Seeya"< /p>