== Start of game ==

• Soccer Kid [Tutorial]

== After beating Tutorial ==

• Rainbow Girl [ALAP 1]

== After beating ALAP1 ==

• Lazybones [ALAP 2]
• Float Boy [Pond]
• Ikebana Teacher [Flowers]
• Cleanly Mom [Cleanup]

== After beating 5 levels ==

• Dog [Roll up the sun]

== After trying and failing to roll up the sun ==

• Hansel & Gretel [Gingerbread]
• Camper Man [Fire]
• Grandpa [ALAP 3]
• Substitute Teacher [School]

== After beating 8 levels and ALAP 3 ==

• Mini-Sumo [Sumo]
• Crane Hat Boy [1000 cranes] - Must also beat School
• F1 Racer [Race]
• Grandma [ALAP 4]
• Book Worm [Fireflies]
• Snow Child [Snowman]
• Dr. Katamari [Friends]

== After beating 12 levels and ALAP 4 ==

• Excited Baby [50 items] - Must also beat Friends
• Fund-raiser [Money]
• Cowbear Farmer [Cowbear] - Must also beat Race

== After beating 18 levels ==

• Rain Coat Girl [Clouds]
• Bird & Elephant [ALAP 5]
• Just-right Girl [Saturn] - Must also beat School

== After credits ==

• Michiru Hoshino [Credits]
• Mustuo Hoshino [Cousins] - Must unlock every cousin to play
• Tomio Hoshino [Save the Earth]
• Rose [1,000,000 roses] - Must also beat Cousins and Save the Earth

Visual guide: