When Risa's "sister" appears, questions only create more questions. How did Risa and Sudo meet, and what has kept them together? Can they face the challenges of the future together, or...
But in the end, I never 
found a single lead.
لكن في النّهاية، لم أجد حتّى دليل واحد
Aber am Ende …
Pero, pese a mis intentos,
no he encontrado ninguna pista.
Pero, pese a mis intentos,
no he encontrado ninguna pista.
Mais finalement,
Ma, alla fine,
Mas, no fim,
nunca encontrei nenhuma pista.
В итоге я так и не нашёл
ни единой зацепки.