As of v0.16.1, one of the top visual novel games with a mostly linear story and family-theme here. Also, at the moment, one of the few visual novels here with an actual harem route (Harem as in MC with multiple lovers and the women agreed upon sharing MC and be involved together) being built into the main part of the story, as i'm going for the harem route, playing every content available in one go. A decent & interesting Male Protagonist with an experienced love-life who's sharing it with those around him and interest main & side characters with good designs. Story focused on rekindling with the family, A little drama with the government and a batty teacher over morals & anti-porn laws, and the main girls horizons being expanded by the MC and secrets coming to light.
One aspect i like about "Sisterly Lust" is you can play the story in single playthrough (minus picking Bella's love or dom route), and not miss or be locked out of story content for no reason, which happen in most VN games here. I wish more visual novel developers allowed players to play a route/path that shows the story content in a single playthrough, not locking out content and not force the players to start-over to see the other route/branch or ending. Especially when on the harem route.
Rachel is my favorite out of the main four girls, like the carefree and adventurous attitude. Susan, interesting day job as a dominatrix and it's amusing she hasn't recognize MC with the mask on. Bella at first was an ass towards the MC for reasons he had no control of, but on the love route helping her & making her feel guilty about it, soothed it over. Liza, a nice twist as it's usually the youngest sister who's naive and a prude, not the oldest one.
All the side characters stick out in their own way. From Nia, Alina, Rebeca, Riley, Adriana, Kira, Ana, Girls from MC's past to Iris & Megan. Love the design of Kira in the little content given of her. Need more content for all of them, but especially for Nia & Rebeca from the island, Riley, & Kira in future updates.