スイッチング ヒーローズ：放置型RPG

The characters are abundant and it's great that you don't really need to spend money! You get a lot of tickets for the gacha during events, and you can easily get 100,000 or 200,000 diamonds used for gacha and such from events alone! By the way, character gacha is 18,000 diamonds for 60 pulls and weapon gacha is 9,000 diamonds, so it's also appealing that beginners can get a lot of育成素材 (training materials)! (It's also lightweight!) It got long, but if you're interested, please try Switching Heroes!