Shiro helps with tasks at his school freely with the aid of the magical powers his father taught him, but is concerned about the rise of violent crimes in the city.

After witnessing an act of violence, Shiro accidentally summons the most powerful Servant of all: Saber.

Rin discovers Shiro's ignorance of the most basic spells. Later, Shiro makes a decision to join the Holy Grail War.

After an attack that could have been fatal, Shiro heals himself and has a realization about who Saber is.

Feeling guilty about how he's been treating Saber, Shiro introduces her to Sakura Mato and Taiga Fujimura during dinner. Afterwards at school, Rin unexpectedly attacks Shiro while Saber is still at his house.

The Servant Rider almost kills Shiro. As a result, Rin and Shiro form a temporary alliance to find out who Rider's master is.