If Isekai no Seikishi Monogatari SS2 were announced tomorrow, here is the most likely format:

Many fans mistakenly believe "SS2" stands for "Season 2." In Japanese OVA terminology, "SS" (Series Second) is sometimes used. However, no official "SS2" has ever been announced.

The confusion often stems from:

Hope is not entirely lost. In 2023, the original Tenchi Muyo! Ryo-Ohki OVA series received a new season (Season 5) after a 7-year gap. This proved that the franchise still has a loyal audience.

Additionally, the recent success of classic isekai re-releases (like The Vision of Escaflowne on Netflix) has sparked interest in nostalgic mecha-isekai. A crowdfunded OVA or a manga adaptation continuation are the most plausible paths forward.