User blog comment:B214/Volume 23 discussion blog/@comment-77.46.204.73-20171109100644/@comment-120.188.65.77-20171112060239

^ I agree that Issei is an idiot, a lovable one in fact but saying Issei's reason beng dense is the same as Ichika is stretching too far. Ichika just wants to be "a morally sound man" which makes him oblivious to the feeling of the girls while Issei suffered from a traumatic event which makes him deny the feelings of the girls. So i think Issei's reason being dense makes more sense than Ichika's.