The Gessen girls infiltrate their middle school to get more info on Gekkou and Senkou.  This means cosplay, and outfits that are way too small.
You're his own granddaughter.
Du bist doch seine leibliche Enkelin.
Eres su nieta.
Eres su nieta.
qui es sa petite-fille biologique.
Tu sei la sua vera nipote.
Você é a neta dele.
Ты ведь и вовсе
родная внучка Курокаге…