Kiyoshi Kurotani (Key) Synergy Bond AbilitiesThe following are Kiyoshi Kurotani's Synergy Bond abilities, including their unlocked effects for Wonder:Synergy Rank Synergy Ability Synergy Ability Effect Rank 1 Hero's Rest Get the book "Quick Revelation Methods". Synergy Rank Synergy Bond Rank-Up Dialogue Choices Synergy Rank-Up Rewards Rank 1 No dialogue choices required. (+50 Synergy Boost)Option 2: "Guess it can't be helped..." (+40 Synergy Boost)Option 3: "We're kindred spirits, after all." Black-Framed Glasses +9 Synergy Boost (Base)+9 Synergy Boost (Preferred)+18 Synergy Boost (First Time, Preferred) 3,560 Yen Buy from Shibuya Discount Store. Limited-Edition Keychain +8 Synergy Boost (Base)+8 Synergy Boost (Preferred)+16 Synergy Boost (First Time, Preferred) 3,000 Yen Buy from Kichijoji Stoneon Shop.