Things come to a head between Rena and Chizuru, which reminds Arata about a traumatic experience in his past.
If I don't understand something,
،إن كان هناك شيءٌ لا أفهمه
Wenn ich etwas nicht verstehe,
recherchiere ich selbst.
Cuando no sé algo, investigo,
Cuando no sé algo, investigo,
Je me renseigne
sur ce qui m’est inconnu
Se c'è qualcosa che non capisco, 
prima faccio delle ricerche,
Se eu não entendo algo,
Если чего-то не понимаю,