Yes, it's really simple. 4 updates is about 5-6 hours of play. While Asuna is fucking at the hotel, Suguha comes to Kirito's house to cook dinner and notices a computer with a live broadcast from the hotel and, unlike the dumb Kirito, immediately recognizes Asuna and Inoda. She gets dirt and thinks about how to get what she wants out of it. That is, Kirito, who didn't break down from depression. She asks him out on a date to the park and there, as usual, the choices are looking for "prurience". A week later, Asuna returns from the hotel, determined to break up with Inoda, but the plan goes to hell because Kyoko refuses to fire Inoda from the company, and Asuna herself cannot leave. Inevitably, Asuna's lust and feelings take over, and their sex in the real world continues wherever possible. Suguha is aware of this lack of respect for oni-chan and writes everything down carefully. Around this time, Sinon is captured by Fox, but manages to send a message to Suguha. Kirito, Suguha, Asuna and Inoda break into the enemy ranks, the Administrator is inside Asuna and cannot help the followers, and Kirito wins. But during the destruction of the Сouncil, some kind of problem happens and Asuna loses Yui. Administrator is gone. Asuna's mind was completely blown and she wanted a child in real life, but Inoda told her not to leave Kirito yet (Inoda is some kind of strange cuckold, in a sense). In short, Asuna fucks with Kirito, then with Inoda, gets pregnant, at this time Kyoko finds out about it and Asuna refuses to have an abortion and Kyoko gets into Inoda's network, well, Liz is already there, since Inoda raped her for the second time.
Then 2 endings -
low "prurience" - Suguha, having lost hope of attracting Kirito's attention, simply shows him the recordings of Asuna's infidelities, Kirito breaks down, runs to Asuna and says that he loves her anyway and cannot leave her. Inoda says that it would be nice for us to have a personal cuckold and humiliate him. The result is Kirito sitting with a cage on his penis and watching Inoda fucking pregnant Asuna, Kyoko and Liz.
high "prurience" Kirito gives in to Suguha and Sinon and voluntarily has sex with them, gradually displacing the image of Asuna. Suguha shows him the videos and Kirito, instead of losing heart, gets angry and puts the recordings online, goes to Asuna, tells her that she is not just a whore, but a famous whore and happily she lives the life of a sow, hits Inoda in the balls and goes off into the sunset.
Of course, this is all personal, but I think even if you add details, you can still fit in 5 hours of play. But Fujino decided to add new characters at the end of the game and stretch the development time by 2 times, so I also can't imagine what he's up to.