| video_game_debut = ''[[Yu-Gi-Oh! 5D's Tag Force 5]]''
* ''[[Yu-Gi-Oh! 5D's Tag Force 6]]''
| gender = Male
| tf05_deck = Plenty of Plentiful Silence
| tf06_deck = Listen to the Silence
| ja_voice =
}}
'''Kozo Nishino''', known as '''Rio''' in the English version, is a character appearing in the ''[[Yu-Gi-Oh! 5D'sTag Force 5]] '' and ''[[Yu-Gi-Oh! 5D's Tag Force|6]]''. In the English version, he is called '''[[Rio]]''', which is the name of a character from the first three Tag Forcegames known as Ryo Kato in the Japanese version, as well as the name used by [[Masaya Nakamura]] in the various translated versions of ''[[Yu-Gi-Oh! 5D's Tag Force 4]]'' games.
==Appearances==
==Gifts==
The player is able to give Rio gifts. The following tables detail how much he likes or dislikes the gifts.
===Tag Force 5-6==={| class="wikitable hlist hcomma" widthstyle="width: 100%;"
<blockquote>A young man who lives in the City.<br/>Aspires to become a professional duelist.<br/><br/>While still an amateur, he is a duelist brimming with passion.<br/>Up until now, his manager has been his father, but it seems he has been negotiating a professional contract with a management company.<br/>Word on the street is that he will have plenty of sponsors in the future due to his captivating and refreshing dueling style.<br/><br/>When it comes to dueling, he is a very earnest hard worker. This might be one of the reasons behind his popularity.</blockquote>
<blockquote>A young man who lives in the City.<br/>Has just achieved his dream of becoming a professional duelist.<br/><br/>A duelist brimming with passion.<br/>Up until now, his manager has been his father, but he has recently signed a professional contract with a management company.<br/>It has been smooth sailing for him since.<br/>Word on the street is that many people fought to sponsor him due to his captivating and refreshing dueling style.<br/><br/>When it comes to dueling, he is a very earnest hard worker. This might be one of the reasons behind his popularity.</blockquote>
==Ending Scenes==
<gallery>
TF5-Kozo-Nishino-Ending.png | ''Tag Force 5''
TF6-Kozo-Nishino-Ending.png | ''Tag Force 6''
</gallery>
==Decks==
Rio uses Decks that feature '''[[Silent_Swordsman_(archetype)|Silent Swordsman]]''' and '''[[Silent_Magician_(archetype)|Silent Magician]]'''.
===Tag Force 5===
Rio's Decks in ''Tag Force 5'' are titled '''"Plenty of Silence" (サイレンスがたっぷり, ''Sairensu ga tappuri'')'''
{{Decklist|Plenty of name = Plentiful Silence 1| ja_name = サイレンスがたっぷり| romaji_name = Sairensu ga Tappuri| level = 5
|effect monsters =
* [[Cyber Dragon]] x2
}}
{{Decklist|Plenty of name = Plentiful Silence 21| ja_name = サイレンスがたっぷり1| romaji_name = Sairensu ga Tappuri 1| level = 3
|effect monsters =
* [[Breaker the Magical Warrior]] x3
}}
{{Decklist|Plenty of name = Plentiful Silence 32| ja_name = サイレンスがたっぷり2| romaji_name = Sairensu ga Tappuri 2| level = 6
|effect monsters =
* [[Cyber Dragon]] x2
}}
{{Decklist|Plenty of name = Plentiful Silence 43| ja_name = サイレンスがたっぷり3| romaji_name = Sairensu ga Tappuri 3| level = 8
|effect monsters =
* [[Cyber Dragon]] x3
===Tag Force 6===
Rio's Decks in ''Tag Force 6'' are titled '''"Listen to the Silence" (リスン・トゥ・ザ・サイレンス)'''
{{Decklist|name = Listen to the Silence 1| ja_name = リスン・トゥ・ザ・サイレンス| romaji_name = Risun to za Sairensu| level = 2
|effect monsters =
* [[Alchemist of Black Spells]] x2
}}
{{Decklist|name = Listen to the Silence 21| ja_name = リスン・トゥ・ザ・サイレンス1| romaji_name = Risun to za Sairensu 1| level = 1
|effect monsters =
* [[A Cat of Ill Omen]] x3
}}
{{Decklist|name = Listen to the Silence 32| ja_name = リスン・トゥ・ザ・サイレンス2| romaji_name = Risun to za Sairensu 2| level = 4
|effect monsters =
* [[Archlord Kristya]] x2
}}
{{Decklist|name = Listen to the Silence 43| ja_name = リスン・トゥ・ザ・サイレンス3| romaji_name = Risun to za Sairensu 3| level = 7