若い力 -SEGA HARD GIRLS MIX- transforms Sega's historic corporate anthem into a bubbly pop-anime ending theme, performed by the five-girl cast of the 2014 TV series Hi☆sCoool! セハガール (SeHaGirl). In that show, Sega's hardware legacy, from the SC-3000 and SG-1000 through the Game Gear and Robo-Pitcher, is personified as high-school girls, and each character's voice actress (Mai Aizawa, Yuu Serizawa, Naomi Ohzora, Minami Tanaka, and Haruna Momono) takes the mic for this group number. The original 若い力 (Youthful Power) was composed by Kei Wakakusa with lyrics by Eiichi Takahashi as Sega's official company song, used for decades at internal events and product launches. Kenji Fujisawa's arrangement reimagines it with a bright, synth-driven pop overhaul that swaps corporate earnestness for anime energy. The lyrics weave the original pep-rally chorus, celebrating intellectual creation and societal contribution, with a rapid-fire roll call of Sega consoles, each device declaring its signature feature in character. In maimai, the song arrived with ORANGE PLUS in June 2015 and has been rebalanced across multiple subsequent versions. Its two level-12+ charts, Master (designed by Jack, 695 notes) and Re:Master (designed by チャン@DP皆伝, 495 notes), share the same 12.7 constant but take starkly different approaches: the Re:Master contains zero Hold notes, relying instead on an aggressive Slide-heavy pattern that tests precision rather than endurance. The Expert chart by 某S氏 offers a gentler entry point at level 10, while the Basic and Advanced charts round out the spread for lower-skill players.