Boruto: Naruto Next Generations Kinchô no mukôgawa (2017– ) Online
Metal is to be trained by Rock Lee to learn the taijutsu technique, The Eight Inner Gates. However, when Rock Lee sees his son wearing a necklace to ward off his anxiety, he calls off the training, leaving Metal to question why he did.
| Episode cast overview: | |||
 | Ryô Nishitani | - | Metal Lee (voice) |
| Yôichi Masukawa | - | Rock Lee (voice) |
| Masashi Ebara | - | Might Guy (voice) |
| Yûko Sanpei | - | Boruto Uzumaki (voice) |
| Kokoro Kikuchi | - | Sarada Uchiha (voice) |
| Shin'ya Hamazoe | - | Iwabee Yuino (voice) |
| Chihiro Ikki | - | Denki Kaminarimon (voice) |
| Shinji Kawada | - | Shino Aburame (voice) |
| Mariko Higashiuchi | - | Suika Kannonji (voice) |
| Ryûichi Kijima | - | Akademî no seito-tachi (voice) |
| Sara Matsumoto | - | Akademî no seito-tachi (voice) |
| Aoi Inase | - | Akademî no seito-tachi (voice) |
| Natsumi Yamada | - | Akademî no seito-tachi (voice) |