Yusuke Shiba’s new series Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita (She fought only slime for 300 years and reached the maximum level before she realized it) was released on 29 June 2017 on Square Enix’s online manga site GanGan GA. The original story is by Kisetsu Morita and the original character designs by Benio.
This manga will be based on the light novel by Kisetsu Morita, who uploaded it to Shosetsuka ni Narou where it gained over 11 million hits. The story starts when 27-year-old former company slave Azusa Aizawa loses her life and is reincarnated as the unaging and immortal witch Azusa Aizawa (NB: written with katakana script instead of kanji like her original name). She leads a laid-back life there, only defeating as much slime as necessary, and after 300 years of relaxed calmness, she suddenly reaches level 99, becoming the strongest witch… The next chapter will be released on 27 July 2017.