There are 2 new things in the game, the main one is pregnancy. The one next door is a Futa jutsu that should also please a few people.
For simplicity, here's how and which characters to make available (no need to make them in order):
Pregnancy:
0. Complete Orochimaru mission then during the day, visit the cave in Harem Village to get the pregnancy scroll.
1. Himawari: Complete Namigan path to the point when you can fuck her - find her in the Konoha during the day (stadion)
2. Eida: Defeat Eida and open the option to have fun with her - find her in the harem village during the day
3. Anko: Unlock a Namigan interaction and make her a baby - find her in Konoha during the night
4. Haku: Talk a few times with her and unlock option to have fun with her - find her in the harem village during the day
5. Hanabi: Unlock the namigan options then make her pregnant - find her in Konoha during the night
6. Hinata: Visit good Hinata, hide in the room, use namigan to stop time and make her pregnant - find her in Konoha during the night
7. Chocho: Unlock Namigan option then fuck her from behind and make her pregnant - find her in Konoha during the day
8. Ino: During night, use Namigan on Ino and fuck her pussy - find her in Konoha during the night
9. Konan: Unlock her sex options - fuck her pussy and make her baby - find her in Iwagakure during the day
10. Kaguya: During night use Namigan on Kaguya and make her a baby - find her in Iwagakure during the night
11. Karin: During night fuck her pussy - find her in Iwagakure during the night
12. Kushina: During night use Namigan and make her a baby
13. Kurenai: Use Namigan on her and fuck her pussy - find her in Konoha during the night
14. Mabui: Fuck her during night in the Ivakagure - find her in Iwagakure during the night
15. Mei: Use Namigan and fuck her face to face - find her in Konoha during the day
16. Namida: Use Namigan on Namida and make her pregnant - find her in Konoha during the night
17. Sakura: During day use Medallion in your room, summon her body and fuck her - find her in Konoha during the day
18. Sumire: Use Namigan on Sumire and make her baby - find her in Iwagakure during the day
19. Tsume: Unlock Namigan and fuck her - find her in Konoha during the day
Futa:
1. Complete Orochimaru mission then enjoy SPA in the Harem village
2. - then have fun with Orochimaru
3. Sakura: During day use Medallion in your room to summon her body and use futa jutsu
4. Tsunade During night get 2 drinks to Tsunade talk to her and try futa jutsu
5. Samui: During night find her in the bar, come closer and use futa jutsu on her
6. Ino: During night use Namigan and give her a massage
7. Hinata: Have fun with bad Hinata and play with her body