Awakening Upgrade (覚醒)

Awakening Upgrade (覚醒) (かくせい "Kakusei") is available to certain players where you can upgrade them from A-Rank to S-Rank.

How to get here:

If you have the requirements, you can find it on the Players Menu (選手メニュー)

What you need
An A-Rank player who is eligible to upgrade to S-Rank. There will be writing on the player's profile that says 覚醒可能. These players are somewhat rare, and are usually tied to an Event (イベント).

Here are the requirements to upgrade the player: The S-Rank players are usually 100-200 spirits lower than the regular S-Rank players in the same series.
 * 10 A-Rank Awakening Upgrade Spirits (Aランク覚醒魂)
 * The player needs to be at the maximum Player Experience Level (選手レベル)
 * If the Special Training Boosts (特訓) level is not at the maximum, you will need Coins (コイン). If at level 0, you need 40000 Coins.
 * If the level is not at its highest (超5, Level 65), then you will need other A-Rank player to expend. Level 60 = 5 players, 61 = 4, 62 = 3, 63 = 2, 64 = 1. You can use a Breakthrough Upgrade (限界突破) with maxed out B-ranks (suggested) or A-ranks (okay, but recommend to save those to upgrade the S-rank) of the same player
 * If the player is at the Maximum (極), then you do not need Coins or Players to use.

These players are typically not high cost players, but usually rookies, utility, spot starters, etc.