Summary
In the year 2080, the world is like it is now, yet different. Government-arranged marriages, elaborate plastic surgery, and medical science are at the forefront of Japanese society.
Sanda Kazushige is a middle-school student who hasn’t quite matured, despite being in the thralls of puberty. Put into a life-threatening situation by his classmate Fuyumura, Sanda discovers his uncanny ability to turn into a burly (and more grown) Santa Claus, and is thrown into a world of chaos to save his fellow students in only ways Santa Claus can do, while trying to solve the mysteries of the school he attends and the truth to where his supposedly-dead classmate Ono went.
- Ch. 101 There's No Smoke Without Fire
- Ch. 100 Believers and Gurus on the Cliff
- Ch. 99 Complete Worship
- Ch. 98 If You Don't Have It, Make It (Illegally)
- Ch. 97.5 Vol 11. Extras
- Ch. 97 A Sled Transport from Ookami Yamato
- Ch. 96 Sanda's Three Paddy Fields
- Ch. 95 The Bat Goes to the Slug Nest
- Ch. 94 Rusting the Scales
- Ch. 93 Emotions of a Sharpener
- Ch. 92 The Voice-Changing Siren
- Ch. 91 Whispering the True Age
- Ch. 90 I Fell Asleep
- Ch. 89 Flower Arrangement for Black Company
- Ch. 88.5 Vol. 10 Extras
- Ch. 88 Exchanging the Pure White Sake Cups
- Ch. 87 After All, Let's Do a Rain Dance!
- Ch. 86 Like a Sea Breeze That Makes Your Hair Creak
- Ch. 85 Respect For the Half-Broken Armor
- Ch. 84 The Best Place for Marbled Pattern
- Ch. 83 Don't Look Away
- Ch. 82 There Seems to be a Boy Soiling His Pants
- Ch. 81 The Girl with the Gravitational Force of a Moon
- Ch. 80 Worshippable Procession
- Ch. 79.5 Vol 9. Extras
- Ch. 79 At Our Impregnable School
- Ch. 78 Milky-White Filled Slugs
- Ch. 77 Salt Overdose
- Ch. 76 The Parent Meeting in a Ring
- Ch. 75 Why Do I Feel So Happy
- Ch. 74 The Awaited Sunset After Visiting a Grave
- Ch. 73 Aren't Tears Just Decorations
- Ch. 72 Recommendations for Amicable Resignation
- Ch. 71 Shall We Horror Dance
- Ch. 70.5 Vol. 8 Extras
- Ch. 70 The Full Moon That Locks You In
- Ch. 69 Smells Like Stewed Pumpkin
- Ch. 68 Even If It's a Feline Whim
- Ch. 67 Welcome to Tokyo Station
- Ch. 66 Midnight Train in Broad Daylight
- Ch. 65 Eye-Opening Caffeine
- Ch. 64 Vending Machine, Turn off Your Power
- Ch. 63 Bird of Peace with Bloodshot Eyes
- Ch. 62 Thanks to the Seller's Market
- Ch. 61.5 Vol. 7 Extras
- Ch. 61 No Touching Hands after Bath
- Ch. 60 The Ransom in Your Heart
- Ch. 59 Glad You're Here
- Ch. 58 The Warm Snow That Never Melts
- Ch. 57 Mitsuo Marukawa, 35 Years Old
- Ch. 56 The Whole Place Smells Like Cigarettes
- Ch. 55 Wishing for Wrinkles like the North Star
- Ch. 54 The Very Cold-Hearted Man
- Ch. 53 The Jet Black Shrine
- Ch. 52.5 Vol. 6 Extras
- Ch. 52 Remember Him Laying Down
- Ch. 51 Countless Wisdom Teeth Know No One
- Ch. 50 Please Take Your Time in the Small Waiting Room
- Ch. 49 Only you Can Start Everything Over
- Ch. 48 I'd Love to Have Horns on your Head
- Ch. 47 It Shows on the Front of the Shirt
- Ch. 46 Let's Shake Hands Enthusiastically
- Ch. 45 The Punch Tastes Like Sweetener
- Ch. 44 Give Him the Ruby
- Ch. 43 The Pale Blue Curtain
- Ch. 42 The After-Party for Two
- Ch. 41 Because I'm Here
- Ch. 40 Cracking the Mirror. I Multiply Myself
- Ch. 39 Remember Chapter 2 Santa is Immune to Fire
- Ch. 38 Exceeds the Speed Limit
- Ch. 37 The Invasion of the Lanterns
- Ch. 36 The You in a Long Time
- Ch. 35 Let the Vibrations be Heard in Your Lullaby
- Ch. 34.5 Omake
- Ch. 34 The Road to Adulthood is Ripped Off
- Ch. 33 Sentimental Sunset
- Ch. 32 I Want Pink Nails
- Ch. 31 Burning Youth - In an Instant
- Ch. 30 Even an Artificial Flower can Rot
- Ch. 29 Be Wary of the Adult in a Black Suit
- Ch. 28 If You Play with Mud, You're Bound to Get Dirty
- Ch. 27 If it's a Cheek Without a Beard
- Ch. 26 The Biggest Whim is Romance
- Ch. 25 Children Who Take Off Their Shoes
- Ch. 24 Can You Cut a Cake
- Ch. 23 Two-Faced Carnivorous Plant
- Ch. 22 The Day I Realized My Friend's Talent
- Ch. 21 A Baby Born From Time
- Ch. 20 Supernatural Kick
- Ch. 19 The Truth Appears with Closed Eyes
- Ch. 18 The Artificial Human Vs. Santa Claus
- Ch. 17 In the Mountain of Red Sweaty Jackets
- Ch. 16.5 Vol. 2 Extras
- Ch. 16 The Night in Which Cells Are Altered
- Ch. 15 Nameless Girl
- Ch. 14 My emergency airbag system
- Ch. 13 The typhoon inside a snow globe
- Ch. 12 I still don’t know how to embrace a child
- Ch. 11 The textbook-tearing Zeus
- Ch. 10 Do not fear maturity
- Ch. 9 Nicotine-filled admiration
- Ch. 8 Fruits sweeten when burned
- Ch. 7 Falling pelts of concrete
- Ch. 6 Falling Banter
- Ch. 5 A pledge taken in front of the cake shop
- Ch. 4 The trauma demon
- Ch. 3 Candies, whips, kisses and blades
- Ch. 2 Their blazing inspiration
- Ch. 1 Everything is so dazzling... Is this growing up