80s J-Disco Identification!

[aspvl]

Hi!
These two songs use the same sample but I'm not finding them... I've tried basically everything...
Can you help?

Just Sean - Magical マジック by Just Sean ATL | Free Listening on SoundCloud



Thank you!

 

[Toritoribe]

I Love You So by 大橋純子(Junko Ōhashi )

 

[aspvl]

I Love You So by 大橋純子(Junko Ōhashi )

Thank you so much!