@sodashintaro @edma To add to @mitsuki48's spoilers,
that night after meeting the heroine Shin sneaks out of the palace to Serea's house because she's worried about her. He find her crying on her balcony; traumatized and afraid because the game's force made her experience the immense hatred the original Serea had for the heroine. Determined to break free of the game influence, Shin figures that maybe a marriage vow done under holy blessing might be strong enough to counter the game.
Also, the heroine (with the support of a baron's house) expands her business holdings into 24 hour convenience stores. Although they provide consumer convenience and opportunities for increased nightlife, Shin can't help but feel it has an unfair advantage over older-model general stores/shops unable to compete with such a revolutionary business.