We still don't know how Kawaki got his Kama seal from and when, but many theories about him defeating Urashiki is possible though. After reading the latest manga, it looks like Kawaki also has the power to absorb jutsus similar to Boruto's Kama seal (correct me if I am wrong). Did Kawaki released the jutsu that Garo guy he absorbed before?
If you guys remember, Urashiki can create a flexible chakra rod which he can use to manifest an extendable thread. Using it, he can pierce through strong defences and bodies to extract chakra residing in a target to store within his gourd, allowing Urashiki to utilise the techniques that the chakra's owner can perform. As such, from absorbing Gaara and Mitsuki's chakra, he became able to perform Gaara's Desert: Hand technique as well as Mitsuki's Lightning Release technique.
I don't think Urashiki absorbs jutsus, but he only takes chakra away. So, how does this explain Kawaki gained Kama seal by Urashiki?
If you guys remember, Urashiki can create a flexible chakra rod which he can use to manifest an extendable thread. Using it, he can pierce through strong defences and bodies to extract chakra residing in a target to store within his gourd, allowing Urashiki to utilise the techniques that the chakra's owner can perform. As such, from absorbing Gaara and Mitsuki's chakra, he became able to perform Gaara's Desert: Hand technique as well as Mitsuki's Lightning Release technique.
I don't think Urashiki absorbs jutsus, but he only takes chakra away. So, how does this explain Kawaki gained Kama seal by Urashiki?