KKLOG
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KKLOG’s official short anime

つのまるとくわすけ

Tsunomaru & Kuwasuke: two beetle grubs, taking it easy

Tsunomaru, a Japanese rhinoceros beetle grub, and Kuwasuke, a Japanese stag beetle grub, became neighbours on a breeder’s shelf. Their days, in episodes of about a minute. The videos are in Japanese.

  • Every Wed & Sat, 20:00 JST
  • From Saturday, 7 November 2026
A mat case and a mushroom bottle side by side on a breeding shelf: Tsunomaru in the mat case, Kuwasuke in the mushroom bottle.

What’s it about?

The two live on a breeder’s shelf. Tsunomaru in fermented mat and Kuwasuke in a mushroom bottle eat different food, and take different times to grow up. It’s the easygoing everyday life of two neighbours.

  • In step with the real seasons

    Their time passes as fast as the real seasons. For now, both are grubs. Tsunomaru will pupate in early summer and become an adult in summer. Kuwasuke… doesn’t know yet.

  • The Beetle note of the day

    Every episode ends with a breeding tip, the “Beetle note of the day”: when to change a mushroom bottle, how to read the mat, and more, one at a time.

  • About a minute an episode

    Short episodes of about a minute, made for a phone held upright. Watch one whenever you have a moment.

Characters

  • Tsunomaru, a rhinoceros beetle grub with an orange head.
    Tsunomaru (つのまる)Japanese rhinoceros beetle grub

    A lively boy who lives in fermented mat and says whatever he thinks. He loves burrowing, and dreams of a fine horn.

  • Kuwasuke, a stag beetle grub with a yellow head.
    Kuwasuke (くわすけ)Japanese stag beetle grub

    Lives in a mushroom bottle. Careful, and goes at his own pace. He doesn’t say much, but he knows a lot. He dreams of big mandibles.

  • Tsunomaru sitting on the breeder’s palm.
    The breederLooks after the two

    All you see are hands and a blue sleeve. Changing their food, weighing them, and keeping their records in KKLOG.

The first five episodes

Episodes #0 to #4 come out on Saturday, 7 November 2026. After that, a new episode every Wednesday and Saturday at 20:00 JST.

  • A scene from #0: Tsunomaru pictures himself as an adult rhinoceros beetle and says his dream is a fine horn.
    #0 Nice to meet you
  • A scene from #1: told that a mushroom bottle is wood chips grown through with fungus, Tsunomaru wants to eat some too.
    #1 Neighbours
  • A scene from #2: a new mushroom bottle arrives. Tsunomaru cheers at the pure white room, Kuwasuke sighs about moving.
    #2 The room’s turning brown
  • A scene from #3: lifted on the breeder’s hand, Kuwasuke says it’s high, and Tsunomaru calls his name.
    #3 Kuwasuke moves house
  • A scene from #4: seeing the little round pellets on the mat, Tsunomaru asks if they are all his droppings.
    #4 Little round droppings
  • The Beetle note of the day from #2: the brown parts of a mushroom bottle are where the grub has eaten; when the brown spreads, it’s time to change the bottle.
    The Beetle note of the dayAt the end of each episode (#2)
Swipe sideways for more scenes

Where to watch

On YouTube Shorts, TikTok and Instagram Reels. Each episode is posted on X (@kklog_official), too. The videos are in Japanese.

Raising beetles? Try KKLOG

The breeder keeps the two’s records in KKLOG, an app for stag and rhinoceros beetle breeders: a log for each beetle, larva growth charts and food change alerts for every day of breeding. There’s a Raise & Battle Game in the app, too.

About KKLOG