Chronology:
1 - https://e-hentai.org/g/1260165/f4518a93a7/
2 - https://e-hentai.org/g/1260163/462a0b381f/
3 - https://e-hentai.org/g/1260160/f7fb4b071d/
4 - https://e-hentai.org/g/1258960/eafb7c9a92/
5 - https://e-hentai.org/g/1260156/39b1877d50/
6 - https://e-hentai.org/g/1288255/86e7abc573/
7 - https://e-hentai.org/g/1288260/ba5ec981ed/
8 - https://e-hentai.org/g/1406502/d53a4492b3/
9 - https://e-hentai.org/g/1406516/f522cf8a97/
10 - https://e-hentai.org/g/1526932/73d63d6088/
11 - https://e-hentai.org/g/1526933/556d8ac304/
12 - https://e-hentai.org/g/1526934/26a8afc86a/
13 - https://e-hentai.org/g/1526936/3eceef2897/
14 - https://e-hentai.org/g/1526935/fedfb0662c/
15 - https://e-hentai.org/g/1526762/b28ef9ec47/
16 - https://e-hentai.org/g/1526761/f9969ce348/
17 - https://e-hentai.org/g/1541598/058d403f8b/
18 - https://e-hentai.org/g/1549500/722bd96359/ (this)

Base +13

WOWWWWWWWWWWWWW

Base +6