I'm creating this thread as a One Stop Center for the songs used in the drama. 

Dreamer - Eiko (MV)

Dreamer - Eiko (Audio)

Dreamer Acoustic - Eiko (Audio)

Dreamer - Mia Iriomote Version (Audio)

I'm Still Alive Today - Maria Diesel (MV)

I'm Still Alive Today - Maria Diesel (Audio)

I'm Still Alive Today - Eiko X Nanami (Audio)

Time Travel - Eiko (Audio)

Mayonaka Door / Stay With Me - Eiko (Audio)

Sayonara Color - Eiko (Audio)

daten -Eiko (Audio)

Running Out - Mia Iriomote (Audio)

SO SO - Maezono Keiji (Audio)

No Future But Go To Future - AZALEA (Audio)

No Future But Go  To Future - Eiko version (Audio)

ChocoPate - AZALEA (Audio)

Mid Day - Jet Jacket (Audio)

Blue Yell - Jet Jacket (Audio)

Time Capsule - Eiko [Owner Kobayashi's Arrangement] ( Audio)

Time Capsule - Eiko X Kabe X East South (Audio)

Time Capsule - Eiko X Kabe X East South (MV)

Which song is your favorite?