It’s referencing Dungeon Meshi. Laios Touden gets very attached to his weird sword.

^I think the “studying girls” line might also be referencing Kabru, who is somewhat manipulative and calculating in his approach to relationships.^

Looks like a reference to Dungeon Meshi. Laios is a character who had an almost autistic-coded love of adventuring and eating monster meat, and wields a mimic sword.