User blog comment:Naty Ranmaru Sawada/Inazuma Eleven GO Galaxy Supernova/Big Bang Recruitments/@comment-25298544-20140819215420

The first item to recruit Fei is called Meddling Device and you can get it by fighting against team willings which is the 8th team in Shadow Person's route on the left (their emblen looks like a green target)

For Mitsuyoshi Yozakura's item you get fighting against a team on the street I don't remember well, but I think is on the FFI stadium zone or in Raimon's school (Present)

And I don't remember what's the achievement for tsurugi+Okita

I hope this helps you.