The best episode written by Manabu Ishikawa is "The Tokyo U Promise From 15 Years Ago: Diary", rated 8.5/10 from 2 user votes. It was "directed by Kiyotaka Isako". "The Tokyo U Promise From 15 Years Ago: Diary" aired on 5/10/2000 and is rated 2.2 point(s) higher than their second highest rated, "The Other Brothers Elric (2)".
The girls discover that Keitaro is not really a Tokyo University student and to make things worse, his studies don't seem to be going very well. Seeing this, Keitaro decides it's time to leave Hinata Inn.
Director: Kiyotaka Isako
Writer: Manabu Ishikawa
Ed and Al uncover a conspiracy involving the Tringham Brothers' father, his involvement with the red water and the disease that's stricken Xenotime.
Director: Masakazu Amiya
Writer: Manabu Ishikawa
Ed and Al are forced to go in search of another source for Marcoh's book after Lust, Gluttony and Scar burn the First Branch Library to the ground.
Director: Atsushi Otsuki
Writer: Manabu Ishikawa