is a Japanese monthly ''shōnen'' manga magazine published by Kodansha, and first issued in May 2005. It is issued in perfect-bound B5 format and retails for 580 yen. ''Monthly Shōnen Sirius'' is aimed at readers aged 16–21. The magazine also serializes manga through their ''Twi Siri''

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account.

Current series

''Twi Siri'' series

References

External links

* 2005 establishments in Japan Monthly manga magazines published in Japan Kodansha magazines Magazines established in 2005 Shōnen manga magazines {{anime-mag-stub