Annoncé le 2ième jour du 6ième anniversaire des NMB48.
Le single sortira le 28 Décembre 2016.
Senbatsu: Yamamoto Sayaka (C), Uemura Azusa, Ota Yuuri, Okita Ayaka, Kato Yuuka, Kawakami Chihiro, Kushiro Rina, Shiroma Miru, Shibuya Nagisa, Jo Eriko, Jonishi Kei, Sutou Ririka, Tanigawa Airi, Naiki Kokoro, Fujie Reina, Murase Sae, Yagura Fuuko, Yabushita Shuu, Yamamoto Ayaka, Yoshida Akari.
Senbatsu:Jonishi Kei, Jonishi Rei, Sutou Ririka, Yoshida Akari, Kawakami Reina, Hayashi Momoka, Ueyama Cocona.
"Boku Igai no Dareka" Type A
CD
1. Boku Igai no Dareka
2. Tochuu Gesha
3. Kodoku Guitar (Team N)
DVD
1. Boku Igai no Dareka
2. Boku Igai no Dareka (Dance version)
3. Boku Igai no Dareka (Kusaka Konomi Dance version)
4. Kodoku Guitar (Team N)
5. NMB48 Concert Summer 2016 Itsu made Yamamoto Sayaka ni Tayoru no Ka? - Commentaire audio partie 1
"Boku Igai no Dareka" Type B
CD
1. Boku Igai no Dareka
2. Tochuu Gesha
3. Koi wa sainan (Team M)
DVD
1. Boku Igai no Dareka
2. Boku Igai no Dareka (Dance version)
3. Boku Igai no Dareka (Kusaka Konomi Dance version)
4. Koi wa sainan (Team M)
5. NMB48 Concert Summer 2016 Itsu made Yamamoto Sayaka ni Tayoru no Ka? - Commentaire audio partie 2
"Boku Igai no Dareka" Type C
CD
1. Boku Igai no Dareka
2. Tochuu Gesha
3. Let it snow (Team BII)
DVD
1. Boku Igai no Dareka
2. Boku Igai no Dareka (Dance version)
3. Boku Igai no Dareka (Kusaka Konomi Dance version)
4. Let it snow (Team BII)
5. Boku Igai no Dareka - Making Of
"Boku Igai no Dareka" Type D
CD
1. Boku Igai no Dareka
2. Tochuu Gesha
3. Priority - Kinoshita Momoka
DVD
1. Boku Igai no Dareka
2. Boku Igai no Dareka (Dance version)
3. Boku Igai no Dareka (Kusaka Konomi Dance version)
4. Priority - Kinoshita Momoka
5. Kinoshita Momoka present Yuuri Gekijou
"Boku Igai no Dareka" Theater Edition
CD
1. Boku Igai no Dareka
2. Tochuu Gesha
3. Taiyou ga Sakamichi wo noboru Koro (Kenkyusei)