Resurrection of Spiritual Energy, Summon Immortal Kabuto at the Beginning

The protagonist travels to a world where spiritual energy is revived. In a standard time travel, both parents are dead and he has a younger sister. Unexpectedly, when people sit at home, disaster will come from heaven. A-level monster attacks the city, in times of crisis The protagonist awakens the system and summons the Immortal Kabuto Successfully killed the big demon, And all this was broadcast live by the school beauty... The author is a newbie, please point it out if there is anything wrong with it, thank you guys This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.