Kazuto Kirigaya not satisfying Asuna Yuuka during sex because Kazuto has a small cock. Asuna is not happy about Kazuto's small cock and prefers to look for a big cock to satisfy Asuna in her pussy.
I have a partner who loves a bush and refuses to accept that I am a porpoise 99% of the time which led to Me measuring My pubes with My micrometer. Then I realized this is probably the only thing that can measure your dick accurately with how small it is