Needed Popipa 4* Pairs:

• Kasumi × Saaya
• Kasumi × Arisa
• Tae × Rimi
• Rimi × Arisa

Needed Afterglow 4* Pairs

• Ran × Tomoe
• Moca × Himari
• Moca × Tomoe
• Himari × Tsugu

Needed Pasupare 4* Pairs:

• Aya × Maya
• Hina × Eve
• Chisato × Maya
• Chisato × Eve

Needed Roselia 4* Pairs:

• Sayo × Ako
• Lisa × Ako
• Lisa × Rin Rin

Needed Harohapi 4* Pairs:

• Kokoro × Kaoru
• Kaoru × Hagumi
• Kaoru × Kanon
• Hagumi × Kanon

RAS and Morfonica aren't mentioned here cause there aren't any events featuring them yet. Also the needed mixed band pairs list is WAY too long