Shouta suddenly begins shutting himself up in his room. He's pouring over a complicated grimoire in order to create a magic item as a gift for Father's Day. Lucoa offers to help him since the task is so difficult, but he refuses and declares he must accomplish it by himself. However, he continues to fail to produce it...
and once the pungent smell 
fades cast the bonding spell.
وحالما تتلاشى الرّائحة اللّاذعة، أستخدم تعويذة الرّبط
Y cuando pierda su fuerte olor,
lanzo el conjuro de unión.
Y cuando pierda su fuerte olor,
lanzo el conjuro de unión.
Quando l'odore pungente comincia a svanire,
è il momento di lanciare l'incantesimo.
e quando o cheiro azedo sumir,
lançar o feitiço de amarração.
А когда пропадёт резкий запах,
использовать магию единения…