"youthful beautiful" is the ending song of SSSS.GRIDMAN. It is performed by Maaya Uchida, and was written by RIRIKO.
- Lyrics & Music: RIRIKO
- Vocals: Maaya Uchida
- Arrangement: Yusuke Shirato, RIRIKO
- Guitar: Yuki Nara (F.M.F), RIRIKO
- Bass: Ryosuke Nikamoto
- Drums: Yuto Sakiya
The song was released as a CD single, and as a DVD limited edition which included the music video. The side-B song on the single release is "Kimi no Heroine de Iru Tame ni" by Masayoshi Oishi.
Maaya Uchida also was one of the singers on the ending theme "Inside Identity" for anime Love, Chunibyo & Other Delusions, on which she did the voice of Rikka Takanashi. She has sung character songs for other anime that she has been a voice actor, including Is the Order a Rabbit?, and Robot Girls Z.
RIRIKO also wrote and sang the opening theme "Sono Saki e", for anime Children of the Whales.
mitsumeru keshiki sora no aosa mo zenbu
asebamu kisetsu no kyomukan no kotae
dare mo shiranain da na
omoidasenakutte mo kitto bokura no deai wa
dokoka de nanika de tsunagarete ita
ashita asatte sono saki datte tonari de
kimi ga matte ite mo inakute mo hashiru yo
kono mama ashi o ugokaseba hikari ni naru
sugu ni kiesouna isshun ha konna nimo
utsukushikatta ka aisete ita ka
kokoro no ana o mitashite