When Touya returns to the mansion, the problem of taking his brides awaits. Yumina and Linze (mostly Yumina) push and push until Touya accepts his engagements. Even Elze and Yae get to join in the polygyny! Hey, are you okay with this, protagonist?!
In that case, you should ask an expert.
في هذه الحالة فينبغي أن تسأل خبيراً
En ese caso, preguntémosle a un experto.
En ese caso, preguntemos a un experto.
Dans ce cas,
et si on demandait à une experte ?
Se è di questo che si tratta, direi 
di chiedere a qualcuno del settore!
Neste caso, devia perguntar para um especialista.
Раз такое дело, то спросим у специалиста.