Because the creature is a pervert. A lot of tentacle monsters just seem to be following their instincts, but this one is distinctly enthusiastic. Wouldn't be surprised if it turns out to be an isekai or something.
Base +6, ginbrz +4, shingofan +8, as102 +15, zxczxcasdasd +12, BLT123 +13, 2Forward1 +6, henrik +6, Shurikensei +12, Gattai +6, Gentleman Chimera +8, AhKai +6, The14thNoah +13, and 4 more...