Gashapon

Want new characters? This is where you should go. So far in the game there are three types of gashapon. You can check the likely outcomes by tapping the 「ガシャ内容詳細」 button.

No, these don't give you real toys.

NORMAL 'Pleb Slot' GASHA
Spend 200 Normal Coins to roll a single character.

Be prepared to get A LOT of 1* rarity characters through it, for this is the common gasha roll found in every single phone game where you collect characters.

Small chance of getting a 2* rarity character.

STORM GASHA
Spend 5 Storm Coins, or get a Premium Gasha Ticket to roll a single character. Spend 50 to get eleven characters.

By using Storm Gasha, you're guaranteed to get characters with 2* rarity and above.

STEP GASHA
Only available for a limited amount of time.

For every time you roll a new character through Step Gasha, you go up one "step". As you proceed though steps, the cost for rolling as well as the likelihood of getting rarer characters increases accordingly. Or so we believe.

Other Gasha

 * Silver Gasha: Barely a step above the Normal/Pleb Gasha. Here you got a chance to get 3* and even one 4* unit (as in, the only 4* unit this draw has), but those happen very rarely. You can get tickets for these by beating certain quests, no objectives needed.
 * Kizuna Gasha: You get these by spending 40 Kizuna Points on a ticket, AKA the flamey things you get when you discard evolved 2* units and above. Similar chances to the Silver Gasha (1*~4*)
 * Colosseum Gasha: Better than the previous two, its tickets are earned by participating in Colosseum matches: Every day, the 5th and 10th match awards one of those tickets, as well as the point rewards if you can actually beat opponents. Units from 1* to 4* (at least, in this one there's two 4* units) await, and for some reason it's got higher chances than the others.
 * Event Gasha: Be it a milestone celebration or whatever, these are only obtainable and usable for a limited time. Just like the Storm Gasha, availability ranges from 2* to 5*, even special units like the Sound Edition ones.
 * Character-Specific Gasha: Get 4 or 5 tickets for it from the 4* missions! This one won't disappoint you because there's only one outcome and it's usually a 4* character, but you will be frustrated attempting to get the tickets.