Kuroiwa Ryuusei

Kuroiwa Ryuusei (黒岩隆盛), also known as Grand Father (グランドファーザー), is the coach of Shinsei Inazuma Japan and The Excellar.

Appearance
Kuroiwa is an old man with long white hair tied in a low ponytail and a beard. On the right side of his face there is a huge scar, partially covered by a pair of sunglasses.

The official site mentions his resemblance to that person, possibly referring to Kageyama Reiji.

Grand Father

 * Power of Tactics increased by 50.
 * Total TTP reduced by 30.

Trivia

 * He appeared in the Chrono Stone game as Grand Father.
 * He may be Kageyama Tougou (Father of Kageyama Reiji) under an alias. His title as Grand Father may be a reference to being Kageyama Hikaru's grand father. Also it was not mentioned ever that he was dead, so this is very likely to be him.