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What do you make of a love interest like Chizuru, who we haven't really seen why on earth she would even like someone like Kazuya beyond her blushing from time to time, only to kiss him out of the blue and be like "it's because of his kindness"?
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This is extreme nice-guy fantasy, as it were. It's a story where the nice guy is entitled to Kazuya's affection by being around her and paying her money and not hitting her or anything, and for her to eventually give him what he "deserves"