Shinchou Yuusha: Kono Yuusha ga Ore Tsueee Kuse ni Shinchou Sugiru  

Cautious Hero: The Hero Is Overpowered but Overly Cautious, Shinchou Yuusha: Kono Yuusha ga Ore Tueee Kuse ni Shinchou Sugiru, This Hero Is Invincible but "Too Cautious", Осторожный герой: и без того сильнейший, он слишком осторожен!, Цей герой надмогутній, але занадто обережний, Этот герой чересчур осторожен, хоть и бессмертен, البطل الحذر

The phrase "you can never be too careful" emphasizes the importance of being prepared for any situation you may encounter. similarly, in games like rpgs, it's beneficial to exceed your enemies' level to achieve complete victory. this describes seiya ryuuguuin perfectly. after being summoned by the goddess ristarte to save gaeabrande from destruction, he spends a considerable amount of time preparing for his journey, even though he has overpowered stats. he uses his strongest skills and buys an excessive amount of supplies and potions to ensure his safety. while his attitude may be somewhat irritating, it could ultimately prove to be the saving grace of gaeabrande, given that this world is dominated by evil forces.