Ay's frags have never been farmable, so why does he have to be 4 stars in order to get his skillbooks? I'd understand if his frags appeared in plot instances such as kurenai or tsunade [sannin war). Tsunade & Sasuke both have skillbooks & skill trials which can easily be gotten but so does Hashirama who is also a super rare. There is no reason as to why Ay should have to be a 4* to get skillbooks when his frags have almost always been stuck behind some type of paywall.

It's just shady business practices, bad enough players are already coughing up 100s of dollars every week on questionable recharge rebates & the latter (by choice) and this is only adding fuel to the fire on why some of the big spenders are beginning to charge back. At the end of the day our concerns will probably be ignored so we might as well take this with a grain of salt.