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Tough Guide and Reading Order (More in depth in comments)
Tough FAQ : r/toughmanga - Reddit
Tough - Reddit
Any “Tough” fan here? : r/Kengan_Ashura - Reddit
Tough Manga : r/manga - Reddit
Ohma vs Kiichi.Miyazawa - Protoganist of Manga "Tough" - Reddit
Koukou Tekken-den Tough ending? : r/toughmanga - Reddit
I just started reading Tough and…. : r/toughmanga - Reddit
Tetsuya Saruwatari Interview from Japan Expo 2012 : …
Is it Tough Being a Friend? Yuujin Character wa Taihen desu ka?