I might be extremely lucky this time, or they've increased the chances for girl cards on Kurito, but this time it took me only 23 R Gacha, offered one by one at a time, to get all 3 new Kurito's girl cards. N came out on 5th try, R on the 16th and SR on 23rd. While the last time i had to feed her a shitton of Rgacha (around 300 i think) to get the SR girl. Though, at first i was trying different combinations - x3 Rgacha, x3 Rgacha & other stuff and then - 1 Rgacha and cheap N stuff like 10 N wilds + 10 Candy + 10 N Gacha. I've also maxed out the N and the R girls with wildcards (including 10 Ex wild cards for each one of them to max out their Ex levels) this time as soon as i got them, so they never appeared again. Though, there were 2 or 3 times when i got 1 N Wild Card in exchange for 1 R gacha, and maybe that was for when i should've gotten the N girl again, but i can't tell for sure (the N girl was never shown again when i was accepting rewards from Kurito, after i got her for the first time - just like the R girl)