This Tegami Bachi photo might contain
fusilier, carabinier, béret vert, forces spéciales, soldat d'élite, soldat d’élite, joint de marine, le joint, joint d'étanchéité de marine, navy seal, and seal.
this is like a little chibi version of Letter Bee, but plus like if they were in school. I don't know what they're saying, unfortunately it hasn't been subbed.