100th and Final Regression

Trapped in a global death tower where only those aged 20 to 50 participate, Yoshida Yuji stands at the 100th floor's entrance. Final after 99 attempts, Yoshida Yuji has reached the top of the tower. Despite reaching the top of the tower, the tower taunts him by saying there is a requirement for a 3-5 member party members to challenge the 100th Floor. On his 100th try, armed with knowledge from past failures, Yoshida Yuji endeavors to gather the companions needed. Will this final attempt lead to victory, or will Yoshida Yuji succumb to the tower's relentless challenges?