Translated from his facebook page, forgive me for the grammar errors :P
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League of Legends was the game that changed my life the most, it gave me the chance to prove myself, and left a mark in the game. I've always complained about how ugly the skin was and wanted another champion, but given another chance, how could I abandon that bond we formed when we fought together (And he was OP back then XD)
The Nunu rework, Riot made specific lines for the TPA skin, and I'm really moved by it. I may not be the last player receive special appreciation like this by Riot, but knowing there's a group of people spending so much effort on such a tiny thing melts my heart. I may not return to summoner's rift, but this skin, this dedication, is something I will always remember.
Thank you, League of Legend.