It's been 24 years, why am I reincarnated in Konoha without a system?

Having transmigrated to Konoha in 1959 and become a classmate of Neji, Mitarai Ishikawa is devastated by his background role... Not only does he lack the bloodline power of the Senju and Uchiha clans, but he's also the unfortunate background character of Team 7! Yes, the same group of extras Kakashi ruthlessly eliminated. Thinking about the dangerous situation ahead, the talentless Ishikawa resolutely decides to cling to the Sixth Hokage, Kakashi, and become Naruto and Sasuke's senior to secure his future! But on the eve of the survival exercise, Ishikawa's house overlaps and merges with Nohara Rin's house in Konoha 1945... Faced with this sudden change, Ishikawa is instantly stunned by the sight of Obito's beloved opposite him! Teacher Kakashi...