I found this on the following page: https://pokumon.com/tamamushi-university-magikarp-campaign/ You don't have much data on the pokemon but looking at the image it wouldn't be crazy to think that the magikarp had the EO of Saito-San (サイトーさん and サイト), I know it's not exactly the same magikarp but coming from the same place I don't think they changed the EO at all the occasions in which it was distributed in pokemon ps: sorry for my bad speech since I am a Spanish speaker xd