The Most Favorable!

Sai Psi Sai Kouchou, sang by Dempagumi.inc is the second opening song of Saiki Kusuo no Ψ Nan which is only played during Sunday in the compiled version of the episode.

Rōmaji
TV version=TBA Tonde tte FURAI FURAI FURAI! Tane mo shikake mo gozaran yo hora HOPPU SUTEPPU JANPU de GECCHUU ie~i! Junbi OK? Kimi wa DJ? Zenzen dare demo kangei KIMI YOO KITERETSU MAKAFUSHIGI ikuze Ichi no ni no san no shin de GO! (iku shikana~i!) Tobidase joushiki! (itsudatsu!) SHIFUTO CHENJI! (kope ten!) Neji hazurete mo okamai nasshin (kama hen!) Chotto okashina nakama ga atsumareba (BII TUGYAZAA) Mainichi densetsu ga umare MASHI MASHI MASHI! (bakusei de~!) Shunkan idou (SASA SASA...) osora wo sanpo (TEKU TEKU...) Dekichattatte okashikunai po (akiramen na yo!) Kokoro BUGIUGI sore daiji (WAKUTEKA) Samezame kyouzame NO! Waratte nanbo MAJIKKU SAI KIKKU HAI KIKKU Sekai wo kaetai da nante ESUPAA WISUPAA'n ja pa~ Dai sore takota iwanai ga Jibun no mawari no arekore kurai Hentekorin demo bachi atannai Magete kone te iccho agari (o-matase shimashita) Tanoshii koto nara kimi to de BAI BAI BAI (HU HU) Warai tobashichaeba daitai nan demo KAI KAI kaiketsu MOOMANTAI! Yarakashite machigatte SUPPO ka shite Jan jan nigiyakase dai dai dai FIIBAA! Tsumaranai mon wa kimi to de Bye Bye Bye (C U) Hyakuten manten ja nikkori manzoku nan nan nante dekinai! O-katai rikutsu wa poi shichae yo RAIKA inoshishi de tsukkonde yuke KURIBITSU TENGYOO de tenkomori BORUTEEJI wa unagi nobori de sai PUSAI sai kouchou! Donna ni senobi wo shite mo KIZZU Mada mada otona nya naritaku nai! nai! nai! BIBITTO BABYUTTO BABIDEBUUDDAKE ja sore wa sore de TAIHEN Demo taikutsu shisugite oite kareru no mo sore wa sore de iya desu Zutto asobi odori tamanya sabori mo ari? Nenjuu oyasumi de sekai heiwa minna ninmari Manneri na RUUCHIN WAAKU hou hou maki de owarashi toki JIITTO shitecha UZU UZU shichau shi danmari nante muri dashi Kayowai OTOME na furi shite FURIIKII FURII na atama de DONSHIN FIIRITTO! Kangaeru dake ja wakannai koto takusan takusan aru mitai Sara sarari to nagareteku nichijou wo ittouryoudan shitai na Mainichi ga! EBURIDEI! Beranmee! Sonnan ja damee Kyuukei wa owari desu (mada mada ikuzee) Ureshii koto datte kimi to de BAI BAI BAI (HU HU) Kudaranai dekigoto ga kinsen gan gan fureteku zenbei CRY Zenshinzenrei sarasu yo FOO YUU Maru maru matomete uketomete NEGA NEGA kibun wa NOO SANKYUU desu Bye Bye Bye Igami yakkami ja zenin sumairu nan nan nante dekinai! Kudaran iji nante POI shichae yo Raika uchuu no kokoro de yuke! Mitai kikitai furetai yo ALL OF YOU! Lalalalala.. Uda uda guda guda shitete mo jikan wa Sui sui suitto nagarete kieteku Ichibyou tari to muda ni shichau nante Iyaiya iyaiya iyaiya iyaiyai Yaiyai yaiyai yaiyai ya iyaiya! Yumemigachi na bokura wa zettai daijoubui Kami-sama botoke-sama wa kitto chan chan chanto miteru!!! INCHIKI IKASAMA shinakute mo MIRAKURU wa futte kuru Tanoshii koto nara kimi to de BAI BAI BAI (HU HU) Warai tobashichaeba daitai nan demo KAI KAI kaiketsu MOOMANTAI! Yarakashite machigatte SUPPO ka shite Jan jan nigiyakase dai dai dai FIIBAA! Tsumaranai mon wa kimi to de Bye Bye Bye (C U) Hyakuten manten ja nikkori manzoku nan nan nante dekinai! O-katai rikutsu wa poi shichae yo RAIKA inoshishi de tsukkonde yuke KURIBITSU TENGYOO de tenkomori BORUTEEJI wa unagi nobori de sai PUSAI sai kouchou! Zen sekai makikonde yuku IRYUUJON de kugi tsukete! Ginga chuu de PARADAISU eien ni SANRAIZU Owaru koto no nai ITTSU SHOO TAIMU!
 * -|Full version=Kibun wa HAI HAI HAI!

Kanji
TV version=TBA
 * -|Full version=TBA

English
TV version=TBA
 * -|Full version=TBA