It's the third game in the larger devil summoner series, released in the same year as persona 3 (and its sequel was the same year as persona 4). A huge fan-favourite character (and if interviews are anything to go by, the smt devs also love him).
Can't believe I open this site for the first time in months and one day later people actually want a more niche megaten rep... bring's a tear to my eye...
Also I mentioned the art earlier but looking at the full one...
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...this really looks like Kazuma Kaneko (but he left ATLUS and hasnt't done art for them since... 2009?) So it surely can't be...