More girls with Light influences yeeeeees. I love the name referencing though. Marina Hartmann. Perf.

Really though. Sakura is younger so they don't quite go to the same school but she does have cr with the KH crew here already which I suppose is an in of sorts. But more than that, she knows the rough family life (though in her case it is more dead parents and not shitty marriage situation). Sakura's just too nice to intentionally worry her older brother by playing up or anything. If Marina hangs around town a lot to avoid going home though, they probably bump into one another, or maybe at Sakura's work at the cupcake bakery?