Miku is missing after the explosion at the Sky Tower, but there's hope she might still be alive.  Despite the danger, the wielders decide to try and recover her from Fine's clutches.
I shouldn't have let go.
ما كان ينبغي أن أُفلتها
Ich hätte nicht
loslassen sollen.
No debí dejarla ir.
No debí soltarla.
Je n’aurais jamais dû lâcher
la main de Miku.
Non avrei dovuto lasciarla andare,
per nessun motivo.
Eu não devia ter soltado...