Tensei, Isekai Mamono Tsukai ~ Nakama wa chiishaku?

Tensei, Isekai Mamono Tsukai ~ Nakama wa chiishaku? summary:

A hikikomori and NEET in the real world, Kyoko (22 old years), transmigrated into a character with big b.r.e.a.s.t.s in an MMO world. Her profession is monster tamer. Somehow managing to ‘capture’ a slime along the way, a human’s face suddenly… i, ikemen?! The slime who became the strongest. The cobra who joined in the middle. This is a story about loving two of such monsters. ※ Warning: It includes yandere and light offensive elements