Monday change the weeks Opening/Ending.
Opening
https://animethemes.moe/video/SeitokaiYakuindomoOP1Lyrics.
https://anilist.co/anime/8675/SeitokaiYakuindomo/
Ending
https://animethemes.moe/video/GokuSayonaraZetsubouSenseiED1.
https://anilist.co/anime/3228/ZokuSayonaraZetsubouSensei/
2