这张专辑由트웰브 (twlv)担任执行制作，KION负责主要制作，Vin.Chee和FVBII参与联合制作。专辑中的歌曲包括GOOD FRIEND MY FALL GOODBOY SYNDROME SUMMERTIME STORY OFF! 和 안녕(ANNYEONG)。每首歌曲的作词均由트웰브 (twlv)完成，编曲和制作则主要由KION负责。专辑的混音和母带处理由多位专业人士完成，包括조부성 KION 트웰브 (twlv)和NahzamSue。视觉指导由Leeddaearth负责。专辑中的每首歌曲都展现了制作团队的精湛技艺和音乐才华。[Credits]Executive Produced by TWLVProduced by KIONCo Produced by Vin.Chee, FVBIIWritten by TWLVMixed by 조부성 @Teria Sound, KION, TWLVMastered by Mastered by bk! at AB Room, NahzamSue @Wormwood Hill Studio, 조부성 @Teria SoundVisual Directed by Leeddaearth 1.GOOD FRIENDProduced by KIONWritten by TWLVArranged by KIONGuitar by KION, 김준서Bass by KIONSynth by KIONDrum program by KIONRecorded by KIONMixed by KION, TWLVMastered by Mastered by bk! at AB Room 2.MY FALLProduced by KION, Vin.CheeWritten by TWLVArranged by KIONGuitar by Vin.Chee, KIONBass by KIONSynth by KIONDrum program by KIONRecorded by KIONMixed by KION, TWLVMastered by NahzamSue @Wormwood Hill Studio 3.GOODBOY SYNDROMEProduced by KIONWritten by TWLVArranged by KIONGuitar by KIONBass by KIONSynth by KIONDrum program by KIONRecorded by KIONMixed & Mastered by 조부성 @Teria Sound 4.SUMMERTIME STORYProduced by KIONWritten by TWLVArranged by KIONGuitar by KIONGuitar Solo by 김원철Bass by KIONSynth by KIONDrum Program by KIONRecorded by KIONMixed & Mastered by 조부성 @Teria Sound 5.OFF!Produced by KIONWritten by TWLVArranged by KIONGuitar by KIONBass by KIONSynth by KIONDrum program by KIONRecorded by KIONMixed & Mastered by 조부성 @Teria Sound 6.안녕(ANNYEONG)Produced by KION,FVBIIWritten by TWLVArranged by KIONGuitar by KIONBass by KIONSynth by KIONDrum program by KION, FVBIINarration by FVBIIRecorded by KIONMixed & Mastered by 조부성 @Teria Sound 7.I WILL(CD ONLY)Produced by KIONWritten by TWLVArranged by KIONBass by KIONSynth by KIONRecorded by KIONMixed & Mastered by KION