it's just a full p2w week with a bunch of f2p features (baloon event for 10 shuriken a day, activity lucky bag 25 times, sakura gift 5 times per day and charm rebate).

once in a while is fine even if would be a totally different week also for f2p if they simply added itachi or yamato breaktroughs, but they are just too greedy about them and they don't want to give us them at all seems (1 breaktrough per month is not a good way to go).