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Courcastクール • Renewal Forecasts
Natsuiro no Sunadokei
Aliases

Hourglass of Summer Colours, Natsu-iro no Sunadokei, Sandglass of Summer Colours, Natsuiro no Sunadokei, Hourglass of Summer, 夏色の砂時計, Default, Synonym, Japanese, English, Sandglass of Summer Colors

S42SPRING 2004OVA
Part of this franchise
concluded
Announced
In production
Releasing
Completed

Hourglass of Summer

Natsuiro no Sunadokei

Makimura Koutarou has made up his mind: during the summer vacation, he is going to confess his love to the seemingly unapproachable Serizawa Kaho. Yet, on the night before, he has a run-in with a strange girl - an encounter which propels him into the future. There, he learns that not only has Kaho-chan become his girlfriend, but she has also died in a tragic accident. Returning to his own time, Koutarou sets out to change the future and save his love.

(Source: Anime News Network)

Last updated

Jun 3, 2026, 11:02 PM

Franchise overview

Franchise timeline

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Renewal pulse

Courcast score breakdown

CourScore is the probability of an official sequel announcement within 18 months, blending attention velocity, completion strength, and catalogue health.

CourScore

34.9

CourScore is the probability of an official sequel announcement within 18 months.

Signal coverage: 92% • Signal freshness: High • Updated 35 minutes ago

Top reasons

  • Cross-platform audience rating - Weighted audience rating 63.8
  • Cross-platform popularity index - Aggregate reach of ~891 followers
  • Committee renewal track record - Lead committee members (Picture Magic, Rikuentai, KSS) historically renew 2% of productions
Runway
Unknown

Source runway is unclear, so feasibility is treated as unknown.

Financial & Commercial41
Production Feasibility24
Audience Reception64
Strategic Priors16
Fandom Engagement0

CourScore history

CourScore over time

Last analysedJun 3, 2026, 11:02 PM
Next scheduledin 23 hours
Latest signals

Fresh telemetry

Courcast watches every connected signal to surface the freshest indicators of momentum.

SourceMetricGeoValueCollected
tmdbvote countGLOBAL2Jun 1, 2026, 12:00 AM
tmdbpopularityGLOBAL0.15Jun 1, 2026, 12:00 AM
youtubechannel views totalGLOBAL28,077May 4, 2026, 12:00 AM
youtubesubscribers totalGLOBAL63May 4, 2026, 12:00 AM
youtubeuploads 30dGLOBAL25May 4, 2026, 12:00 AM
youtubeuploads 7dGLOBAL25May 4, 2026, 12:00 AM
youtubeviews 30dGLOBAL14,292May 4, 2026, 12:00 AM
youtubeviews 7dGLOBAL14,292May 4, 2026, 12:00 AM
anilisttrendingGLOBAL0May 31, 2026, 12:00 AM
anilistfavoritesGLOBAL12May 31, 2026, 12:00 AM
anilistaverage scoreGLOBAL60May 31, 2026, 12:00 AM
anilistpopularityGLOBAL2,275May 31, 2026, 12:00 AM
malplan to watchGLOBAL3,687May 25, 2026, 12:00 AM
malcompletedGLOBAL5,736May 25, 2026, 12:00 AM
malwatchingGLOBAL349May 25, 2026, 12:00 AM
kitsumember countGLOBAL1,085Jun 3, 2026, 12:00 AM
kitsuscore meanGLOBAL66.15Jun 3, 2026, 12:00 AM
shikimoriscore meanGLOBAL65.9May 30, 2026, 12:00 AM
kitsurating rankGLOBAL8,205Jun 3, 2026, 12:00 AM
wikipediapageviews dailyEN.WIKIPEDIA13May 30, 2026, 12:00 AM