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there's still one eyesocket without a dojutsu, perfect for a rinnegan
why didn't he do some more advanced chakra control? like sticking multiple leaves, then spinning them in different directions and speed, or maybe use some sticks or strings to make different shapes by using chakra alone, then do it while exercising
uh oh
will the story move forward at all? training montage exists for a reason, it compress the nitty gritty of improvement in compact package so it doesn't become repetitive
did he get a defective shadow clone technique? i don't think it works like that in canon
almost everyone thought he has a quirk before being told he was actually quirkless
never change, Toji, never change
but it failed when he was cut off from the echo box, unless he can find a way to produce his own magic and/or his tech got upgraded to nanoscale that can construct epidermal armor & combat poisons with uninterruptible power supply, he would always be at severe disadvantage compared to enhanced beings